Add overall frontend metrics for actions

[zhongnansu]

Issue #, if available:

Description of changes:

• Add some overall metrics for "action"(API call)

 "request_total": 5, # total requests since the server is up
 "request_count": 0, # total requests from last minute
 "success_count": 0, # successgul requests from last minute
 "failed_request_count_system_error": 0, # from last minute
 "failed_request_count_user_error": 0 # from last minute

• response format

{
 "report": {
   "create": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   },
   "create_from_definition": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   },
   "download": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 1
   },
   "list": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 2
   },
   "info": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   }
 },
 "report_definition": {
   "create": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   },
   "list": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 2
   },
   "info": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   },
   "update": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   },
   "delete": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   }
 },
 "report_source": {
   "list": {
     "count": 0,
     "system_error": 0,
     "user_error": 0,
     "total": 0
   }
 },
 "dashboard": {
   "pdf": {
     "download": {
       "count": 0,
       "total": 0
     }
   },
   "png": {
     "download": {
       "count": 0,
       "total": 0
     }
   }
 },
 "visualization": {
   "pdf": {
     "download": {
       "count": 0,
       "total": 0
     }
   },
   "png": {
     "download": {
       "count": 0,
       "total": 0
     }
   }
 },
 "saved_search": {
   "csv": {
     "download": {
       "count": 0,
       "total": 1
     }
   }
 },
#### newly-added metrics ####
 "request_total": 5,
 "request_count": 0,
 "success_count": 0,
 "failed_request_count_system_error": 0,
 "failed_request_count_user_error": 0
}

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Merging #287 (75aacab) into dev (45abee7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #287   +/-   ##
=======================================
  Coverage   74.94%   74.94%           
=======================================
  Files          32       32           
  Lines        1764     1764           
  Branches      342      342           
=======================================
  Hits         1322     1322           
  Misses        437      437           
  Partials        5        5           

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