fix(cpescan): CpeVendorProductMatch not set when Redis Backend

[kotakanbe]

What did you implement:

There were two bugs.

• Fixed the problem that CPE Scan in RDB Backend always resulted in CPEVendorProductMatch.
• Fixed the problem that the Confidence of CPE Scan is always CpeVersionMavch in Redis Backend.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Fixed the problem that CPE Scan in RDB Backend always resulted in CPEVendorProductMatch.

• make diff

diff -c /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T21:47:55+09:00/rails.json /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T21:47:56+09:00/rails.json
*** /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T21:47:55+09:00/rails.json       2021-07-16 21:48:11.122172711 +0900  
--- /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T21:47:56+09:00/rails.json       2021-07-16 21:48:11.302179183 +0900    
***************                                                                                                                                                
*** 34,41 ****                                                                                                                                                                                       
              "cveID": "CVE-2007-6077",                                                                                                                       
              "confidences": [                                                                                                                                                                                       
                  {                                                                                                                                                                                                                      
!                     "score": 10,                                                                                                                         
!                     "detectionMethod": "CpeVendorProductMatch"                                                                                           
                  }                                                                                                                                                                                                             
              ],                                                                                                                                                                                                         
              "cveContents": {                                                                                                                                                                       
--- 34,41 ----                                                                                                                                                                                        
              "cveID": "CVE-2007-6077",                                                            
              "confidences": [                                                                                                                       
                  {                                                                                                                
!                     "score": 100,                                                                                                    
!                     "detectionMethod": "CpeVersionMatch"                                                                 
                  }                                                                                                                         
              ],                                                                                                                                 
              "cveContents": {                                                                              

Fixed the problem that the Confidence of CPE Scan is always CpeVersionMavch in Redis Backend.

• make diff-redis

diff -c /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T22:37:51+09:00/cpe_vendor_product_match.json /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T22:37:52+09:00/cpe_vendor_product_match.json                                                                                                                
*** /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T22:37:51+09:00/cpe_vendor_product_match.json    2021-07-16 22:37:57.556610387 +0900                                                                                                                                                                                                              
--- /home/ubuntu/go/src/github.com/future-architect/vuls/integration/results/2021-07-16T22:37:52+09:00/cpe_vendor_product_match.json    2021-07-16 22:37:57.756617491 +0900                                                                                                                                                                                                              
***************                                                                                                                                                                                                                                                                                                                                                                          
*** 35,42 ****                                                                                                                                                                                                                                                                                                                                                                           
              "cveID": "CVE-2020-9307",                                                                                                                                                                                                                                                                                                                                                  
              "confidences": [                                                                                                                                                                                                                                                                                                                                                           
                  {                                                                                                                                                                                                                                                                                                                                                                      
!                     "score": 100,                                                                                                                                                                                                                                                                                                                                                      
!                     "detectionMethod": "CpeVersionMatch"                                                                                                                                                                                                                                                                                                                               
                  }                                                                                                                                                                                                                                                                                                                                                                      
              ],                                                                                                                                                                                                                                                                                                                                                                         
              "cveContents": {                                                                                                                                                                                                                                                                                                                                                           
--- 35,42 ----                                                                                                
              "cveID": "CVE-2020-9307",         
              "confidences": [
                  {
!                     "score": 10,
!                     "detectionMethod": "CpeVendorProductMatch"
                  }
              ],
              "cveContents": {

Checklist:

• Write tests
• Write documentation
• Check that there aren't other open pull requests for the same issue/feature
• Format your source code by make fmt
• Pass the test by make test
• Provide verification config / commands
• Enable "Allow edits from maintainers" for this PR
• Update the messages below

Is this ready for review?: YES

[MaineK00n]

LGTM