Add fix to upgrade backwards compatibility

Author: CecileRobertMichon

parts/k8s/kubernetesmastercustomdata.yml

@@ -366,6 +366,8 @@ runcmd:
 - sudo /bin/chown etcd:etcd {{WrapAsVariable "etcdServerKeyFilepath"}}
 - sudo /bin/chown etcd:etcd {{WrapAsVerbatim "variables('etcdPeerKeyFilepath')[copyIndex(variables('masterOffset'))]"}}
 - systemctl restart etcd
+- MEMBER="$(sudo etcdctl member list | grep -E {{WrapAsVerbatim "variables('masterVMNames')[copyIndex(variables('masterOffset'))]"}} | cut -d{{WrapAsVariable "singleQuote"}}:{{WrapAsVariable "singleQuote"}} -f 1)"
+- sudo etcdctl member update ${MEMBER} {{WrapAsVerbatim "variables('masterEtcdPeerURLs')[copyIndex(variables('masterOffset'))]"}}
 - for i in $(seq 1 20); do curl --cacert /etc/kubernetes/certs/ca.crt --cert /etc/kubernetes/certs/etcdclient.crt --key /etc/kubernetes/certs/etcdclient.key --max-time 60 "{{WrapAsVerbatim "variables('masterEtcdClientURLs')[copyIndex(variables('masterOffset'))]"}}"/v2/machines; [ $? -eq 0 ] && break || sleep 5; done
 - retrycmd_if_failure apt-get update
 - retrycmd_if_failure apt-get install -y apt-transport-https ca-certificates

parts/k8s/kubernetesmastervars.t

@@ -297,6 +297,7 @@
     "scope": "[resourceGroup().id]",
     "tenantId": "[subscription().tenantId]",
     "targetEnvironment": "[parameters('targetEnvironment')]",
+    "singleQuote": "'",
     "dockerEngineDownloadRepo": "[parameters('dockerEngineDownloadRepo')]",
     "dockerEngineVersion": "[parameters('dockerEngineVersion')]"
 {{if .LinuxProfile.HasSecrets}}
@@ -330,6 +331,5 @@
     "agentWindowsOffer": "WindowsServerSemiAnnual",
     "agentWindowsSku": "Datacenter-Core-1709-with-Containers-smalldisk",
     "agentWindowsVersion": "[parameters('agentWindowsVersion')]",
-    "singleQuote": "'",
     "windowsCustomScriptSuffix": " $inputFile = '%SYSTEMDRIVE%\\AzureData\\CustomData.bin' ; $outputFile = '%SYSTEMDRIVE%\\AzureData\\CustomDataSetupScript.ps1' ; Copy-Item $inputFile $outputFile ; Invoke-Expression('{0} {1}' -f $outputFile, $arguments) ; "
 {{end}}