[artifactory] [artifactory-ha] Support Openshift helm install

[flouis1]

PR Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [] Chart Version bumped
• [] CHANGELOG.md updated
• [] Variables and other changes are documented in the README.md
• Title of the PR starts with chart name (e.g. [artifactory])

What this PR does / why we need it:
Move securitycontext to container level:

• Need to be set securitycontext at container level for openshift
• Set security context at pod level will be no more possible on gke 1.25
  Add fixes on nginx to work with openshift

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

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[chukka]

Supported via #1855