(etcd) Support dash shell

- Rewrite some anchor scripting to support dash
  - 'function' not supported, refactor POSIX function declarations
- Rewrite aux monitor to support dash
  - Same
Change-Id: If44c59be2f30fd30c1a668bc27e58b37575610b5

charts/etcd/templates/bin/_etcdctl_anchor.tpl

@@ -14,12 +14,14 @@
 # limitations under the License.
 set -x
 TEMP_MANIFEST=/tmp/etcd.yaml
-function sync_file {
+
+sync_file () {
     if ! cmp "$1" "$2"; then
         cp -f "$1" "$2"
     fi
 }
-function sync_certificates {
+
+sync_certificates () {
     mkdir -p /etcd-etc/tls
     sync_file /etc/etcd/tls/certs/client-ca.pem /etcd-etc/tls/client-ca.pem
     sync_file /etc/etcd/tls/certs/peer-ca.pem /etcd-etc/tls/peer-ca.pem
@@ -28,14 +30,16 @@ function sync_certificates {
     sync_file "/etc/etcd/tls/keys/${ETCD_NAME}-etcd-client-key.pem" /etcd-etc/tls/etcd-client-key.pem
     sync_file "/etc/etcd/tls/keys/${ETCD_NAME}-etcd-peer-key.pem" /etcd-etc/tls/etcd-peer-key.pem
 }
-function create_manifest {
+
+create_manifest () {
     WIP=/tmp/wip-manifest.yaml
     cp -f /anchor-etcd/{{ .Values.service.name }}.yaml $WIP
     sed -i -e 's#_ETCD_INITIAL_CLUSTER_STATE_#'$2'#g' $WIP
     sed -i -e 's#_ETCD_INITIAL_CLUSTER_#'$1'#g' $WIP
     mv -f "$WIP" "$3"
 }
-function sync_configuration {
+
+sync_configuration () {
     sync_certificates
     ETCD_INITIAL_CLUSTER=$(grep -v $PEER_ENDPOINT "$1" \
         | awk -F ', ' '{ print $3 "=" $4 }' \
@@ -47,7 +51,7 @@ function sync_configuration {
     chmod go-rwx "${MANIFEST_PATH}"
 }
 
-function cleanup_host {
+cleanup_host () {
     rm -f $MANIFEST_PATH
     rm -rf /etcd-etc/tls/
     rm -rf /etcd-data/*

charts/etcd/values.yaml

@@ -14,8 +14,8 @@
 
 images:
   tags:
-    etcd: quay.io/coreos/etcd:v3.2.18
-    etcdctl: quay.io/coreos/etcd:v3.2.18
+    etcd: quay.io/coreos/etcd:v3.4.0
+    etcdctl: quay.io/coreos/etcd:v3.4.0
   pull_policy: "IfNotPresent"
 
 labels:

promenade/templates/roles/genesis/etc/kubernetes/manifests/auxiliary-kubernetes-etcd.yaml

@@ -27,14 +27,14 @@ spec:
         - |-
           set -x
 
-          function external_member_count() {
+          external_member_count () {
               etcdctl member list \
                   | grep '\bstarted\b' \
                   | grep -Ev "\\b(auxiliary-0|auxiliary-1)\\b" \
                   | wc -l
           }
 
-          function remove_if_possible() {
+          remove_if_possible () {
               MEMBER_NAME=$1
               MEMBER_ID=$(etcdctl member list | grep "${MEMBER_NAME}" | awk -F ', ' '{ print $1 }')
               if [ -n "${MEMBER_ID}" ]; then