Disable Cobertura autoUpdateStability

This is a temporary change to enable v1.7.10 release.

Desired Outcome

Jenkins build on main are failing due to Codertura line coverage reporting, which is preventing a new release. This PR intends to temporarily lower the minimum line coverage and disable the minimum coverage "ratchet" mechanism.

Implemented Changes

Disabled autoUpdateStability and autoUpdateHealth
Increased minimum coverage thresholds from 30% to 50%
To ensure this is working as expected, I made a commit that removed tests, bringing the coverage figure under the previous commit, but still above the minimum 50% threshold. The resulting Jenkins build did not report unsatisfactory code coverage.

Uses cyberark/secrets-provider-for-k8s#365 as reference:

This change disables the autoUpdateStability and autoUpdateHealth features in Cobertura runs in Jenkins. These features apparently use moving average statistics (not sure of the algorithm used since documentation for these Cobertura plugin features is scarce to nonexistent) over a sliding window of past code coverage results. There's also a "ratchet" mechanism that keeps "raising the bar" for acceptible overall coverage (e.g. starts at 80%, but then can move to 90-95% after several runs).

Connected Issue/Story

Resolves #[relevant GitHub issue(s), e.g. 76]

CyberArk internal issue link: [insert issue ID]()

Definition of Done

At least 1 todo must be completed in the sections below for the PR to be merged.

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

Disable Cobertura autoUpdateStability #1452