Proxy support for Mesos cluster

For OpenStack environment behind a firewall, services such as
google/docker cannot be accessed directly so a proxy server
is needed to provide access.Proxy support is already available
for Kubernetes and Swarm clusters. This series of patches adds
the proxy support for Mesos cluster.

This particular patch covers the Mesos master node.

Implements: blueprint add-proxy-mesos
Change-Id: I1c6e212e1477801d6f0d3c4a48df4f0bba5223d4

magnum/templates/mesos/fragments/write-heat-params-master.sh

@@ -5,4 +5,7 @@ cat > /etc/sysconfig/heat-params <<EOF
 MESOS_MASTERS_IPS="$MESOS_MASTERS_IPS"
 CLUSTER_NAME="$CLUSTER_NAME"
 QUORUM="$((($NUMBER_OF_MASTERS+1)/2))"
+HTTP_PROXY="$HTTP_PROXY"
+HTTPS_PROXY="$HTTPS_PROXY"
+NO_PROXY="$NO_PROXY"
 EOF

magnum/templates/mesos/mesoscluster.yaml

@@ -159,6 +159,12 @@ resources:
           type: String
         - name: QUORUM
           type: String
+        - name: HTTP_PROXY
+          type: String
+        - name: HTTPS_PROXY
+          type: String
+        - name: NO_PROXY
+          type: String
 
   configure_master:
     type: OS::Heat::SoftwareConfig
@@ -166,6 +172,12 @@ resources:
       group: script
       config: {get_file: fragments/configure-mesos-master.sh}
 
+  add_proxy_master:
+    type: OS::Heat::SoftwareConfig
+    properties:
+      group: script
+      config: {get_file: fragments/add-proxy.sh}
+
   start_services_master:
     type: OS::Heat::SoftwareConfig
     properties:
@@ -186,6 +198,9 @@ resources:
         MESOS_MASTERS_IPS: {list_join: [' ', {get_attr: [mesos_masters, mesos_master_ip]}]}
         CLUSTER_NAME: {get_param: cluster_name}
         NUMBER_OF_MASTERS: {get_param: number_of_masters}
+        HTTP_PROXY: {get_param: http_proxy}
+        HTTPS_PROXY: {get_param: https_proxy}
+        NO_PROXY: {get_param: no_proxy}
 
   configure_master_deployment:
     type: OS::Heat::SoftwareDeploymentGroup
@@ -195,10 +210,18 @@ resources:
       config: {get_resource: configure_master}
       servers: {get_attr: [mesos_masters, attributes, mesos_server_id]}
 
-  start_services_master_deployment:
+  add_proxy_master_deployment:
     type: OS::Heat::SoftwareDeploymentGroup
     depends_on:
       - configure_master_deployment
+    properties:
+      config: {get_resource: add_proxy_master}
+      servers: {get_attr: [mesos_masters, attributes, mesos_server_id]}
+
+  start_services_master_deployment:
+    type: OS::Heat::SoftwareDeploymentGroup
+    depends_on:
+      - add_proxy_master_deployment
     properties:
       config: {get_resource: start_services_master}
       servers: {get_attr: [mesos_masters, attributes, mesos_server_id]}