[fcos] Specfile: Make %global commit ... overridable

[LorbusChris]

Blocks: openshift/release#5659

- What I did
Make %global commit foo overridable with rpmbuild --define "commit bar"

- How to verify it
This should unblock the build-rpms-from-tar job over in openshift/release#5659

- Description for the changelog
Specfile: Make %global commit ... overridable

[LorbusChris]

/test e2e-aws

[ericavonb]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ericavonb, LorbusChris

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [LorbusChris,ericavonb]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[LorbusChris]

/retest

[LorbusChris]

/retest

[smarterclayton]

/retest

[openshift-ci-robot]

@LorbusChris: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-aws	2a20255	link	/test e2e-aws

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[smarterclayton]

Oh, this won't pass.

/override ci/prow/e2e-aws

[openshift-ci-robot]

@smarterclayton: Overrode contexts on behalf of smarterclayton: ci/prow/e2e-aws

Details

In response to this:

Oh, this won't pass.

/override ci/prow/e2e-aws

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.