Use metadata golang package instead of raw HTTP#2123

julianKatz wants to merge 2 commits intokubernetes-sigs:masterkubernetes-sigs/gcp-compute-persistent-disk-csi-driver:masterfrom

julianKatz:use-metadata-packagejulianKatz/gcp-compute-persistent-disk-csi-driver:use-metadata-packageCopy head branch name to clipboard