[WIP] Make Scylla Operator resources configurable in CI scripts

[rzetelskik]

Description of your changes: wip

Which issue is resolved by this Pull Request:
Resolves #

/kind machinery
/priority important-soon
/cc

[scylla-operator-bot]

@rzetelskik: GitHub didn't allow me to request PR reviews from the following users: rzetelskik.

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In response to this:

Description of your changes: wip

Which issue is resolved by this Pull Request:
Resolves #

/kind machinery
/priority important-soon
/cc

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[scylla-operator-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: rzetelskik
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[scylla-operator-bot]

@rzetelskik: The following tests 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/e2e-gke-release-script-latest	70713cb	link	true	/test e2e-gke-release-script-latest
ci/prow/e2e-gke-parallel-clusterip	70713cb	link	true	/test e2e-gke-parallel-clusterip

Full PR test history. Your PR dashboard.

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