Sync with internal repo

[piyush-tiwari]

Commits added:

1. Add default PodSecurityContext rules for a stricter security posture for NIC deployments
2. Update base image to Oracle Linux 8
3. Fix GetSSLConfigForBackendSet logic for secret type artifacts
4. Add default tagging support, and block updates for defined tags where value has a tag variable

[coveralls]

Pull Request Test Coverage Report for Build 12004171376

Details

• 101 of 149 (67.79%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 65.407%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/controllers/ingress/util.go	1	2	50.0%
pkg/controllers/ingressclass/ingressclass.go	9	18	50.0%
pkg/controllers/ingressclass/util.go	89	104	85.58%
pkg/util/util.go	2	25	8.0%

Totals
Change from base Build 11454110009:	0.1%
Covered Lines:	2700
Relevant Lines:	4128

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💛 - Coveralls