Reserve a test port for broken api to fix race (#5371)

* Reserve a test port for broken api to fix race

* I cheated.

tests/test_remote.py

@@ -23,7 +23,7 @@ HTTP_BASE_URL = 'http://127.0.0.1:{}'.format(MASTER_PORT)
 
 HA_HEADERS = {HTTP_HEADER_HA_AUTH: API_PASSWORD}
 
-broken_api = remote.API('127.0.0.1', "bladiebla")
+broken_api = remote.API('127.0.0.1', "bladybla", port=get_test_instance_port())
 hass, slave, master_api = None, None, None