bigip_monitor_http: two small bug fixes

- extra properties were not set at creation, only when updating
  which can be overlooked when running the module from more than 1 node...
- fix bas var as time_until_up didn't get used

net_infrastructure/bigip_monitor_http

@@ -394,7 +394,7 @@ def main():
                                    {'type': 'ITYPE_TIMEOUT',
                                     'value': timeout},
                                    {'type': 'ITYPE_TIME_UNTIL_UP',
-                                    'value': interval}]
+                                    'value': time_until_up}]
 
     # main logic, monitor generic
 
@@ -425,11 +425,9 @@ def main():
             # whether it already existed, or was just created, now update
             # the update functions need to check for check mode but
             # cannot update settings if it doesn't exist which happens in check mode
-            if monitor_exists and not module.check_mode:
-                result['changed'] |= update_monitor_properties(api, module, monitor,
-                                                               template_string_properties,
-                                                               template_integer_properties)
-            # else assume nothing changed
+            result['changed'] |= update_monitor_properties(api, module, monitor,
+                                                    template_string_properties,
+                                                    template_integer_properties)
 
             # we just have to update the ipport if monitor already exists and it's different
             if monitor_exists and cur_ipport != ipport: