server: saving quota in GiB instead GB

[rchikatw]

• PVCs are in Gib and quota is in GB because of which pvc creation is restricted when the quota reaches around 95%
• manual Cherry-pick of saving quota in GiB instead GB #2895

[openshift-ci]

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[rchikatw]

/test ocs-operator-bundle-e2e-aws

[openshift-ci]

@rchikatw: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/ocs-operator-bundle-e2e-aws	b1a5e4d	link	true	/test ocs-operator-bundle-e2e-aws

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