Fix some "make pep8" errors in the digital_ocean module.

library/cloud/digital_ocean

@@ -186,9 +186,9 @@ class Droplet(JsonfyMixIn):
             self.power_on()
 
         if wait:
-            end_time = time.time()+wait_timeout
+            end_time = time.time() + wait_timeout
             while time.time() < end_time:
-                time.sleep(min(20, end_time-time.time()))
+                time.sleep(min(20, end_time - time.time()))
                 self.update_attr()
                 if self.is_powered_on():
                     if not self.ip_address:
@@ -283,18 +283,18 @@ def core(module):
             droplet = Droplet.find(module.params['id'])
             if not droplet:
                 droplet = Droplet.add(
-                        name=getkeyordie('name'),
-                        size_id=getkeyordie('size_id'),
-                        image_id=getkeyordie('image_id'),
-                        region_id=getkeyordie('region_id'),
-                        ssh_key_ids=module.params['ssh_key_ids']
-                    )
+                    name=getkeyordie('name'),
+                    size_id=getkeyordie('size_id'),
+                    image_id=getkeyordie('image_id'),
+                    region_id=getkeyordie('region_id'),
+                    ssh_key_ids=module.params['ssh_key_ids']
+                )
             if droplet.is_powered_on():
                 changed = False
             droplet.ensure_powered_on(
-                        wait=getkeyordie('wait'),
-                        wait_timeout=getkeyordie('wait_timeout')
-                    )
+                wait=getkeyordie('wait'),
+                wait_timeout=getkeyordie('wait_timeout')
+            )
             module.exit_json(changed=changed, droplet=droplet.to_json())
 
         elif state in ('absent', 'deleted'):