Add invocation of olm-create-bundle.sh to build-controller-release.sh

[trgeiger]

Issue #, if available: 972

Description of changes:
Adds olm-create-bundle.sh to the OLM conditional block of build-controller-release.sh. Also adds stripping the 'v' from $BUNDLE_RELEASE to prevent any breakage if the user has that variable including a 'v.'

fixes aws-controllers-k8s/community#972

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[ack-bot]

Hi @trgeiger. Thanks for your PR.

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[jaypipes]

Looks sensible, thanks @trgeiger :)

[jaypipes]

/lgtm

[ack-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jaypipes, trgeiger

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