hack/update-generated-openapi.sh: fix openapi-gen input file format

Author: sttts

hack/update-generated-openapi.sh

@@ -34,13 +34,15 @@ ORIGIN_INPUT_DIRS=(
 KUBE_INPUT_DIRS=$(IFS=,; echo "${KUBE_INPUT_DIRS[*]}")
 ORIGIN_INPUT_DIRS=$(IFS=,; echo "${ORIGIN_INPUT_DIRS[*]}")
 
+function join { local IFS="$1"; shift; echo "$*"; }
+
 echo "Generating origin openapi"
 ${GOPATH}/bin/openapi-gen \
   --build-tag=ignore_autogenerated_openshift \
   --output-file-base zz_generated.openapi \
   --go-header-file ${SCRIPT_ROOT}/hack/boilerplate.txt \
   --output-base="${GOPATH}/src" \
-  --input-dirs "${KUBE_INPUT_DIRS},${ORIGIN_INPUT_DIRS}" \
+  --input-dirs $(join , "${KUBE_INPUT_DIRS[@]}" "${ORIGIN_INPUT_DIRS[@]}") \
   --output-package "${ORIGIN_PREFIX}pkg/openapi" \
   --report-filename "${SCRIPT_ROOT}/hack/openapi-violation.list" \
   "$@"
@@ -51,7 +53,7 @@ ${GOPATH}/bin/openapi-gen \
   --output-file-base zz_generated.openapi \
   --go-header-file ${SCRIPT_ROOT}/vendor/k8s.io/kubernetes/hack/boilerplate/boilerplate.generatego.txt \
   --output-base="${GOPATH}/src" \
-  --input-dirs "${KUBE_INPUT_DIRS}" \
+  --input-dirs $(join , "${KUBE_INPUT_DIRS[@]}") \
   --output-package "${ORIGIN_PREFIX}/vendor/k8s.io/kubernetes/pkg/generated/openapi" \
   --report-filename "${SCRIPT_ROOT}/vendor/k8s.io/kubernetes/hack/openapi-violation.list" \
   "$@"