make build status badge point to new repo travis

[jberkhahn]

per #2650

this probably won't pass until #2652 is merged

[k8s-ci-robot]

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[k8s-ci-robot]

@jberkhahn: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-service-catalog-unit	5f3d7b6	link	/test pull-service-catalog-unit
pull-service-catalog-integration	5f3d7b6	link	/test pull-service-catalog-integration
pull-service-catalog-xbuild	5f3d7b6	link	/test pull-service-catalog-xbuild

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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[jberkhahn]

going to make this part of the other PR