Scenario templates: make is_proxy_gateway configurable

is_proxy_gateway is part of the environmental settings, so it should
be possible to override it from the scenario file. Nevertheless,
keep the default value as the current one, so that the existing jobs
work without changes.

Change-Id: I4cc20154c9ee0b126a1ea21ee72090f76cf6b6e1

etc/scenario/sahara-ci/cdh-5.4.0.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: cdh
     plugin_version: 5.4.0
@@ -44,7 +46,7 @@ clusters:
           - YARN_NODEMANAGER
           - ZOOKEEPER_SERVER
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
       - name: master-additional
         flavor: ${medium_flavor_id}
         node_processes:

etc/scenario/sahara-ci/fake.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: fake
     plugin_version: "0.1"
@@ -17,7 +19,7 @@ clusters:
           - jobtracker
           - namenode
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
     cluster_template:
       name: fake01
       node_group_templates:

etc/scenario/sahara-ci/hdp-2.0.6.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: hdp
     plugin_version: 2.0.6
@@ -16,7 +18,7 @@ clusters:
           - SECONDARY_NAMENODE
           - ZOOKEEPER_SERVER
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
       - name: worker
         flavor: ${ci_flavor_id}
         node_processes:

etc/scenario/sahara-ci/mapr-4.0.2.mrv2.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: mapr
     plugin_version: 4.0.2.mrv2
@@ -25,7 +27,7 @@ clusters:
         auto_security_group: true
         volumes_per_node: 2
         volumes_size: 20
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
       - name: worker
         flavor: ${ci_flavor_id}
         node_processes:

etc/scenario/sahara-ci/spark-1.3.1.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: spark
     plugin_version: 1.3.1
@@ -9,7 +11,7 @@ clusters:
           - master
           - namenode
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
       - name: worker
         flavor: ${ci_flavor_id}
         node_processes:

etc/scenario/sahara-ci/transient.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: vanilla
     plugin_version: 2.7.1
@@ -28,7 +30,7 @@ clusters:
           - resourcemanager
           - namenode
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
     cluster_template:
       name: transient
       node_group_templates:

etc/scenario/sahara-ci/vanilla-2.7.1.yaml.mako

@@ -1,3 +1,5 @@
+<%page args="is_proxy_gateway='true'"/>
+
 clusters:
   - plugin_name: vanilla
     plugin_version: 2.7.1
@@ -39,7 +41,7 @@ clusters:
           - secondarynamenode
           - nodemanager
         auto_security_group: true
-        is_proxy_gateway: true
+        is_proxy_gateway: ${is_proxy_gateway}
     cluster_template:
       name: vanilla271
       node_group_templates: