Fix hack scripts on Mac

Use POSIX flags and do not expect bash 4.

hack/lib/util/docs.sh

@@ -109,18 +109,18 @@ readonly -f os::util::gen-docs
 # os::util::set-man-placeholder puts a placeholder for every generated manpage.
 function os::util::set-man-placeholder() {
 	MAN_OUTPUT_DIR="$1"
-	declare -A generated_files=( ["${1}/.files_generated_oadm"]="${1}/.files_generated_oadm"
-	                           ["${1}/.files_generated_oc"]="${1}/.files_generated_oc"
-	                           ["${1}/.files_generated_openshift"]="${1}/.files_generated_openshift" )
+	declare -a generated_files=( "${1}/.files_generated_oadm=${1}/.files_generated_oadm"
+                                 "${1}/.files_generated_oc=${1}/.files_generated_oc"
+                                 "${1}/.files_generated_openshift=${1}/.files_generated_openshift" )
 
 	# remove all of the old manpages; we don't want to check them in.
 	for generated_file in "${generated_files[@]}"; do
 		while read file; do
 			generated_man="$MAN_OUTPUT_DIR/${file}"
-			if [[ "${generated_man}" != "${generated_files[$generated_file]}" ]]; then
-				cp "${OS_ROOT}/hack/autogenerated_placeholder.txt" "${generated_man}"
+			if [[ "${generated_man}" != "${generated_file##}" ]]; then
+				cp "${OS_ROOT}/hack/autogenerated_placeholder.txt" "${generated_man#*=}"
 			fi
-		done <"${generated_file}"
+		done <"${generated_file%%=*}"
 	done
 }
 readonly -f os::util::set-man-placeholder

hack/update-generated-listers.sh

@@ -13,7 +13,7 @@ INPUT_DIRS=$(
   grep -v 'pkg\/security\/api' | \
   sort -u | \
   sed "s,^,${PREFIX}," | \
-  paste -sd,
+  paste -sd, -
 )
 
 genlisters \

hack/update-generated-swagger-spec.sh

@@ -58,7 +58,7 @@ generated_file="${SWAGGER_SPEC_OUT_DIR}/openshift-openapi-spec.json"
 oc get --raw "/swagger.json" --config="${MASTER_CONFIG_DIR}/admin.kubeconfig" > "${generated_file}"
 
 os::util::sed 's|https://127.0.0.1:38443|https://127.0.0.1:8443|g' "${generated_file}"
-os::util::sed -r 's|"version": "[^\"]+"|"version": "latest"|g' "${generated_file}"
+os::util::sed -E 's|"version": "[^\"]+"|"version": "latest"|g' "${generated_file}"
 printf '\n' >> "${generated_file}"
 
 # Copy all protobuf generated specs into the api/protobuf-spec directory