logging: add support for multiple instances of CLF

[JoaoBraveCoding]

Issue: https://issues.redhat.com/browse/LOG-6040 (there's an accompany gdoc to this PR in the issue comments)

This PR is a PoC that allows users to specify multiple CLF as configResource in the ManagedClusterAddon. Users should still create CLF under the namespace open-cluster-management-observability. To make a CLF instance land on a namespace other than openshift-logging users should annotate said CLF with mcoa/namespace, the value in this annotation will be the namespace where the CLF instance will land.

Missing:

• Update the helm chart to create arbitrary namespaces.
• Update the helm chart to create SA & RBAC to match the different CLF instances.
• Update the helm chart to make secrets land on the correct namespace instead of just openshift-logging.
• Make sure we are not passing duplicated secrets to the helm chart.
• Add tests
• Manual Test

[coveralls]

Pull Request Test Coverage Report for Build 10686914464

Details

• 46 of 69 (66.67%) changed or added relevant lines in 3 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-1.4%) to 56.707%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/logging/manifests/logging.go	38	47	80.85%
internal/logging/manifests/values.go	0	14	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/logging/manifests/logging.go	3	83.87%

Totals
Change from base Build 10630428964:	-1.4%
Covered Lines:	186
Relevant Lines:	328

---

💛 - Coveralls

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: JoaoBraveCoding

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[coveralls]

Pull Request Test Coverage Report for Build 11056133655

Details

• 37 of 63 (58.73%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 56.707%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/logging/manifests/logging.go	37	49	75.51%
internal/logging/manifests/values.go	0	14	0.0%

Totals
Change from base Build 11054546275:	0.5%
Covered Lines:	186
Relevant Lines:	328

---

💛 - Coveralls

[openshift-merge-robot]

PR needs rebase.

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