Add empty tests to force go to include coverage for dirs without tests

Desired Outcome

Currently, the Golang code coverage automated tests that are run via Jenkins are not including Go packages that don't have any Go test files. If we want accurate code coverage reports, then these packages should be reported as having 0% coverage and included in the overall coverage report. Otherwise, we're overestimating our actual code coverage.

Implemented Changes

For all Go package directories that don't have any Go tests, a file is temporarily added called empty_test.go that only includes a package statement (and some comments). This will force Go to include the package in coverage reports as being 0% covered.

The empty_test.go files should be deleted whenever Go tests are actually added to each package.

Connected Issue/Story

CyberArk internal issue link: ONYX-17302

Definition of Done

[x] empty_test.go files added.
[x] Jenkins tests pass.

Changelog

[ ] The CHANGELOG has been updated, or
[x] This PR does not include user-facing changes and doesn't require a CHANGELOG update

Test coverage

[ ] This PR includes new unit and integration tests to go with the code changes, or
[x] The changes in this PR do not require tests

Documentation

[ ] Docs (e.g. READMEs) were updated in this PR
[ ] A follow-up issue to update official docs has been filed here: [insert issue ID]()
[x] This PR does not require updating any documentation

Behavior

[ ] This PR changes product behavior and has been reviewed by a PO, or
[ ] These changes are part of a larger initiative that will be reviewed later, or
[x] No behavior was changed with this PR

Security

[ ] Security architect has reviewed the changes in this PR,
[ ] These changes are part of a larger initiative with a separate security review, or
[x] There are no security aspects to these changes

cyberark / secretless-broker