tests: enable priv init container for upgrade on openshift

[SanyaKochhar]

Description: Sets enablePrivilegedInitContainer to true if test is run on an OpenShift cluster

Affected area:

Functional Area
New Functionality	[ ]
Documentation	[ ]
Install	[ ]
CLI Tool	[ ]
Certificate Management	[ ]
Control Plane	[ ]
Ingress	[ ]
Egress	[ ]
Networking	[ ]
Observability	[ ]
SMI Policy	[ ]
Sidecar Injection	[ ]
Security	[ ]
Upgrade	[ ]
Tests	[x]
CI System	[ ]
Demo	[ ]
Performance	[ ]
Other	[ ]

Please answer the following questions with yes/no.

1. Does this change contain code from or inspired by another project? no

   • Did you notify the maintainers and provide attribution?

2. Is this a breaking change?
   no

[codecov-commenter]

Codecov Report

Merging #3738 (496435c) into main (0322387) will increase coverage by 2.09%.
The diff coverage is 58.66%.

@@            Coverage Diff             @@
##             main    #3738      +/-   ##
==========================================
+ Coverage   67.65%   69.75%   +2.09%     
==========================================
  Files         181      185       +4     
  Lines        8772     8989     +217     
==========================================
+ Hits         5935     6270     +335     
+ Misses       2804     2670     -134     
- Partials       33       49      +16     

Flag	Coverage Δ
unittests	69.75% <58.66%> (+2.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cmd/cli/mesh_upgrade.go	70.83% <ø> (+25.00%)	⬆️
cmd/osm-controller/log_handler.go	77.77% <0.00%> (-6.23%)	⬇️
cmd/osm-controller/osm-controller.go	13.07% <0.00%> (-0.45%)	⬇️
pkg/catalog/egress.go	83.89% <0.00%> (-3.72%)	⬇️
pkg/catalog/inbound_traffic_policies.go	78.81% <0.00%> (-4.23%)	⬇️
pkg/catalog/traffictarget.go	88.46% <0.00%> (ø)
pkg/constants/constants.go	0.00% <ø> (ø)
pkg/endpoint/mock_endpoint_provider_generated.go	0.00% <ø> (ø)
pkg/endpoint/types.go	100.00% <ø> (ø)
pkg/providers/kube/fake.go	0.00% <0.00%> (ø)
... and 48 more

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[nshankar13]

@Mergifyio backport release-v0.9

[mergify]

Command backport release-v0.9: success

Backports have been created

• #3871 tests: enable priv init container for upgrade on openshift (backport #3738) has been created for branch release-v0.9