Add google cloud storage exporter to contrib distribution (#1253) #175

Job	Run time
Release k8s / prev-tag	3s
Release k8s / prepare (linux, riscv64)	5m 40s
Release k8s / prepare (linux, amd64)	5m 48s
Release k8s / prepare (linux, s390x)	5m 35s
Release k8s / prepare (linux, arm64)	5m 16s
Release k8s / prepare (linux, ppc64le)	5m 44s
Release k8s (Windows)	0s
Release k8s / Release	3m 38s
Release k8s / Create GitHub issue on failed nightly release	0s
	31m 44s

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