Switch from gazel to kazel, and move kazelcfg into build/root

.kazelcfg.json

@@ -0,0 +1 @@
+build/root/.kazelcfg.json

hack/update-bazel.sh

@@ -20,21 +20,10 @@ set -o pipefail
 export KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
-# Remove generated files prior to running gazel.
+# Remove generated files prior to running kazel.
 # TODO(spxtr): Remove this line once Bazel is the only way to build.
 rm -f "${KUBE_ROOT}/pkg/generated/openapi/zz_generated.openapi.go"
 
-go get -u gopkg.in/mikedanese/gazel.v17/gazel
+kube::util::go_install_from_commit github.com/kubernetes/repo-infra/kazel fd3ec969104295f8484a32114ce625955a67365d
 
-for path in ${GOPATH//:/ }; do
-  if [[ -e "${path}/bin/gazel" ]]; then
-    gazel="${path}/bin/gazel"
-    break
-  fi
-done
-if [[ -z "${gazel:-}" ]]; then
-  echo "Couldn't find gazel on the GOPATH."
-  exit 1
-fi
-
-"${gazel}" -root="$(kube::realpath ${KUBE_ROOT})"
+kazel -root="$(kube::realpath ${KUBE_ROOT})"

hack/verify-bazel.sh

@@ -20,25 +20,13 @@ set -o pipefail
 export KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
-go get gopkg.in/mikedanese/gazel.v17/gazel
-
-# Remove generated files prior to running gazel.
+# Remove generated files prior to running kazel.
 # TODO(spxtr): Remove this line once Bazel is the only way to build.
 rm -f "${KUBE_ROOT}/pkg/generated/openapi/zz_generated.openapi.go"
 
-for path in ${GOPATH//:/ }; do
-  if [[ -e "${path}/bin/gazel" ]]; then
-    gazel="${path}/bin/gazel"
-    break
-  fi
-done
-if [[ -z "${gazel:-}" ]]; then
-  echo "Couldn't find gazel on the GOPATH."
-  exit 1
-fi
-
+kube::util::go_install_from_commit github.com/kubernetes/repo-infra/kazel fd3ec969104295f8484a32114ce625955a67365d
 
-if ! "${gazel}" -validate -print-diff -root="$(kube::realpath ${KUBE_ROOT})" ; then
+if ! kazel -validate -print-diff -root="$(kube::realpath ${KUBE_ROOT})" ; then
   echo
   echo "Run ./hack/update-bazel.sh"
   exit 1