loveRhythm1990: Add kubernetes.io/hostname label for PV, save PV informer cache space

JobBuild
236
02-18 03:42
pull-sig-storage-local-static-provisioner 1363315382680555520 1363312947400544256 1362246104199991296
pull-sig-storage-local-static-provisioner-e2e 1363315382797996032 1363312947509596160 1362246104334209024
pull-sig-storage-local-static-provisioner-e2e-gke 1363315382844133376 1363312947543150592 1362246104384540672
pull-sig-storage-local-static-provisioner-test 1363315382756052992 1363312947471847424 1362246104279683072
pull-sig-storage-local-static-provisioner-verify 1363315382722498560 1363312947434098688 1362246104237740032