[TT-6486/TT-9052] use Tyk CertificateManager interface

[jeffy-mathew]

Description

Related Issue

https://tyktech.atlassian.net/browse/TT-6486
TykTechnologies/tyk#5062 - adds an interface for certificate manager, this breaks tests in tyk-dashbord by importing tyk-identity-broker

Motivation and Context

How This Has Been Tested

Screenshots (if appropriate)

Types of changes

• 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 change)
• Refactoring or add test (improvements in base code or adds test coverage to functionality)

Checklist

• Make sure you are requesting to pull a topic/feature/bugfix branch (right side). If pulling from your own
  fork, don't request your master!
• Make sure you are making a pull request against the master branch (left side). Also, you should start
  your branch off our latest master.
• My change requires a change to the documentation.
  • If you've changed APIs, describe what needs to be updated in the documentation.
  • If new config option added, ensure that it can be set via ENV variable
• I have updated the documentation accordingly.
• Modules and vendor dependencies have been updated; run go mod tidy && go mod vendor
• When updating library version must provide reason/explanation for this update.
• I have added tests to cover my changes.
• All new and existing tests passed.
• Check your code additions will not fail linting checks:
  • go fmt -s
  • go vet

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[sredxny]

@jeffy-mathew please fill the "Related Issue" section so we have track of what was included. Also release it to release-1.4

[jeffy-mathew]

/release to release-1.4

[tykbot]

Working on it! Note that it can take a few minutes.

[tykbot]

@jeffy-mathew Succesfully merged PR