cloudstack: cs_instance: deploy instance in desired state on state=started/stopped

Before this change, an instance must be present for make use of state=stopped/started. Now we are deploying an instance in the desire state if it does not exist.

In this case all args needed to deploy the instance must be passed. However the short form for stopping/starting an _existing_ instance still works as before.

cloud/cloudstack/cs_instance.py

@@ -548,7 +548,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
         return user_data
 
 
-    def deploy_instance(self):
+    def deploy_instance(self, start_vm=True):
         self.result['changed'] = True
         networkids = self.get_network_ids()
         if networkids is not None:
@@ -573,6 +573,7 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
         args['group']               = self.module.params.get('group')
         args['keypair']             = self.module.params.get('ssh_key')
         args['size']                = self.module.params.get('disk_size')
+        args['startvm']             = start_vm
         args['rootdisksize']        = self.module.params.get('root_disk_size')
         args['securitygroupnames']  = ','.join(self.module.params.get('security_groups'))
         args['affinitygroupnames']  = ','.join(self.module.params.get('affinity_groups'))
@@ -700,10 +701,12 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def stop_instance(self):
         instance = self.get_instance()
+
         if not instance:
-            self.module.fail_json(msg="Instance named '%s' not found" % self.module.params.get('name'))
+            instance = self.deploy_instance(start_vm=False)
+            return instance
 
-        if instance['state'].lower() in ['stopping', 'stopped']:
+        elif instance['state'].lower() in ['stopping', 'stopped']:
             return instance
 
         if instance['state'].lower() in ['starting', 'running']:
@@ -722,10 +725,12 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def start_instance(self):
         instance = self.get_instance()
+
         if not instance:
-            self.module.fail_json(msg="Instance named '%s' not found" % module.params.get('name'))
+            instance = self.deploy_instance()
+            return instance
 
-        if instance['state'].lower() in ['starting', 'running']:
+        elif instance['state'].lower() in ['starting', 'running']:
             return instance
 
         if instance['state'].lower() in ['stopped', 'stopping']:
@@ -744,10 +749,12 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
 
     def restart_instance(self):
         instance = self.get_instance()
+
         if not instance:
-            module.fail_json(msg="Instance named '%s' not found" % self.module.params.get('name'))
+            instance = self.deploy_instance()
+            return instance
 
-        if instance['state'].lower() in [ 'running', 'starting' ]:
+        elif instance['state'].lower() in [ 'running', 'starting' ]:
             self.result['changed'] = True
             if not self.module.check_mode:
                 instance = self.cs.rebootVirtualMachine(id=instance['id'])