[PM-11973] feat: add custom cert option

[TheKangaroo]

Add optional custom certificate from configmap.

I also added an example on how to add the ca certificate via preInstall array.

[TheKangaroo]

I'm not sure volume is the right key to put the caCertificate key under, since technically caCertificate is not a volume, but a ConfigMap.
WDYT?

[bitwarden-bot]

Thank you for your contribution! We've added this to our internal Community PR board for review.
ID: PM-11973

[bitwarden-bot]

Checkmarx One – Scan Summary & Details – d1dca1e4-db16-4403-a2d4-aaac5a45d06c

New Issues

Severity	Issue	Source File / Package	Checkmarx Insight
	Passwords And Secrets - Generic Password	/tests.yml: 103	Query to find passwords and secrets in infrastructure code.
	Unpinned Actions Full Length Commit SHA	/version-bump.yml: 96	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/version-bump.yml: 103	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/update-versions.yml: 52	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/version-bump.yml: 39	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/update-versions.yml: 27	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/version-bump.yml: 111	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/version-bump.yml: 23	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...
	Unpinned Actions Full Length Commit SHA	/update-versions.yml: 131	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...

Fixed Issues

Severity	Issue	Source File / Package
	Passwords And Secrets - Generic Password	/tests.yml: 117
	Unpinned Actions Full Length Commit SHA	/version-bump-self-host.yml: 39
	Unpinned Actions Full Length Commit SHA	/update-versions-self-host.yml: 131
	Unpinned Actions Full Length Commit SHA	/version-bump-self-host.yml: 96
	Unpinned Actions Full Length Commit SHA	/version-bump-self-host.yml: 111
	Unpinned Actions Full Length Commit SHA	/version-bump-self-host.yml: 23
	Unpinned Actions Full Length Commit SHA	/version-bump-sm-operator.yml: 47
	Unpinned Actions Full Length Commit SHA	/version-bump-self-host.yml: 103
	Unpinned Actions Full Length Commit SHA	/update-versions-self-host.yml: 52
	Unpinned Actions Full Length Commit SHA	/update-versions-self-host.yml: 27
	Unpinned Actions Full Length Commit SHA	/version-bump-sm-operator.yml: 30
	Unpinned Actions Full Length Commit SHA	/tests.yml: 38

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