Update memory limit to 5Gi

[dkwon17]

What does this PR do?

This PR updates the memory limit of the devworkspace-controller container of the devworkspace-controller-manager-* pod from 3Gi to 5Gi.

What issues does this PR fix or reference?

Fixes #1345

Is it tested? How?

To test, run:

DWO_IMG_REPO=quay.io/<username>/<repo>
DWO_IMG_TAG=<tag>
export DWO_BUNDLE_IMG=${DWO_IMG_REPO}/devworkspace-operator-bundle:${DWO_IMG_TAG}
export DWO_INDEX_IMG=${DWO_IMG_REPO}/devworkspace-operator-index:${DWO_IMG_TAG}
export DOCKER=podman 
make generate_olm_bundle_yaml build_bundle_and_index register_catalogsource

And install the operator from OperatorHub.

Verify that the resulting devworkspace-controller-manager-* pod in the openshift-operators namespace has the new memory limit for the devworkspace-controller container.

PR Checklist

• E2E tests pass (when PR is ready, comment /test v8-devworkspace-operator-e2e, v8-che-happy-path to trigger)
  • v8-devworkspace-operator-e2e: DevWorkspace e2e test
  • v8-che-happy-path: Happy path for verification integration with Che

[AObuchow]

LGTM, thanks for addressing this @dkwon17 :)
I installed DWO using the PR test instructions on an OCP 4.16 cluster, and the devworkspace-controller-manager deployment & pod had the correct memory limit:

  containers:
    - resources:
        limits:
          cpu: '3'
          memory: 5Gi
        requests:
          cpu: 250m
          memory: 100Mi

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AObuchow, dkwon17

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