Add new field gatekeeperEnforcementAction to override enforcementAction

[yiraeChristineKim]

• Add a new field of gatekeeperEnforcementAction
• Default value of the field is unset and when unset, don't touch the constraint (existing behavior)
• If set, then directly set spec.enforcementAction in the Gatekeeper constraint
• Should be settable at the policyDefaults, policy, and manifest levels (i.e. like the ConfigurationPolicyOptions struct). Ref: https://issues.redhat.com/browse/ACM-11076 Signed-off-by: yiraeChristineKim yikim@redhat.com

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This pull-request has been approved by: mprahl, yiraeChristineKim

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