kube-up: move yaml-quote from GCE & AWS to common

cluster/aws/coreos/util.sh

@@ -53,6 +53,3 @@ function check-minion() {
   echo "working"
 }
 
-function yaml-quote {
-  echo "'$(echo "${@}" | sed -e "s/'/''/g")'"
-}

cluster/common.sh

@@ -410,3 +410,12 @@ function stage-images() {
   rm -rf "${temp_dir}"
   return 0
 }
+
+# Quote something appropriate for a yaml string.
+#
+# TODO(zmerlynn): Note that this function doesn't so much "quote" as
+# "strip out quotes", and we really should be using a YAML library for
+# this, but PyYAML isn't shipped by default, and *rant rant rant ... SIGH*
+function yaml-quote {
+  echo "'$(echo "${@}" | sed -e "s/'/''/g")'"
+}

cluster/gce/util.sh

@@ -465,15 +465,6 @@ function add-instance-metadata-from-file {
   done
 }
 
-# Quote something appropriate for a yaml string.
-#
-# TODO(zmerlynn): Note that this function doesn't so much "quote" as
-# "strip out quotes", and we really should be using a YAML library for
-# this, but PyYAML isn't shipped by default, and *rant rant rant ... SIGH*
-function yaml-quote {
-  echo "'$(echo "${@}" | sed -e "s/'/''/g")'"
-}
-
 function write-master-env {
   # If the user requested that the master be part of the cluster, set the
   # environment variable to program the master kubelet to register itself.