(CISC-973) Handle vars in gcp provisioner

tasks/provision_service.rb

@@ -90,11 +90,20 @@ def provision(platform, inventory_location, vars)
     job_url = data['job_url']
   end
   inventory_full_path = File.join(inventory_location, 'inventory.yaml')
-
   params = platform_to_cloud_request_parameters(platform, cloud, region, zone)
   response = invoke_cloud_request(params, uri, job_url, 'post')
   response_hash = YAML.safe_load(response)
-  if File.file?(inventory_full_path)
+  unless vars.nil?
+    var_hash = YAML.safe_load(vars)
+    response_hash['groups'].each do |bg|
+      bg['targets'].each do |trgt|
+        bg['uri'].each do |ur|
+          ur['vars'] = var_hash
+        end
+      end
+    end
+  end
+	if File.file?(inventory_full_path)
     inventory_hash = inventory_hash_from_inventory_file(inventory_full_path)
 
     inventory_hash['groups'].each do |g|
@@ -108,7 +117,7 @@ def provision(platform, inventory_location, vars)
     File.open(inventory_full_path, 'w') { |f| f.write inventory_hash.to_yaml }
   else
     File.open('inventory.yaml', 'wb') do |f|
-      f.write(response)
+      f.write(response_hash)
     end
   end