istio-operator: Add resource limit and request

Package Owner Merge Request

Package Changes

Links to all MRs that are associated with this change are required.

• https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-operator/-/merge_requests/19

Additional Details

Closes https://repo1.dso.mil/platform-one/big-bang/apps/core/policy/-/issues/76

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