[php/ubiquity] Tag a test as broken (#10546)

ubiquity-workerman-mongo had problems starting or stopping.

Ubiquity also defines 12 tests in benchmark_config.json (max is 10).

Author: p8

frameworks/PHP/ubiquity/benchmark_config.json

@@ -177,7 +177,8 @@
         "database_os": "Linux",
         "display_name": "ubiquity-workerman-mongo",
         "notes": "",
-        "versus": "php"
+        "versus": "php",
+        "tags": ["broken"]
       },
       "workerman-raw": {
         "json_url": "/Json_",