fix: add timeout to apply/replace kubectl calls (#572)

[jgwest]

See parent issue for details.

This PR:

• Sets a 1 hour timeout for an Apply request to complete.
  • (I'm definitely open to other values here, but my expectation is users would only expect an apply to be active for seconds, or at most a single digit number of minutes).
  • For contrast, the timeout for replace (when force=true) is 5 minutes

Why no timeout for create operation? Not supported by kubectl code, AFAICT. Why no timeout for replace? Not supported by kubectl code, except in the case where force is true, in which case the timeout is 5 minutes.

Fixes #572

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[ppapapetrou76]

The gitops-engine repository is migrating to https://github.com/argoproj/argo-cd. We are closing all draft PRs.
Please feel free to submit it again once the migration is over.