[master] [fcos] GCP: add a script and a service which ensure GCP routes are set correctly

[openshift-cherrypick-robot]

This is an automated cherry-pick of #1442

/assign LorbusChris

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[vrutkovs]

The installer PR for bootstrap - openshift/installer#3071 - won't pass shellcheck. Should be hold this one until it merges in installer first so that we wouldn't diverge?

[LorbusChris]

👍 We'll have to re-create this PR anyway if it can't merge as-is, or can I actually push into the cherrypick-robot's branch?
/hold

[vrutkovs]

I'd rather go with recreate - repo admins can push to this branch though

[LorbusChris]

Superseded by #1449
/close

[openshift-ci-robot]

@LorbusChris: Closed this PR.

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In response to this:

Superseded by #1449
/close

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[openshift-ci-robot]

@openshift-cherrypick-robot: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/e2e-aws	ab27800	link	/test e2e-aws
ci/prow/e2e-aws-scaleup-rhel7	ab27800	link	/test e2e-aws-scaleup-rhel7

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.

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