Add test cases and post build hook

[rhcarvalho]

💠 Adding a test case to the existing app didn't seen like the most fun and useful thing to do right now, so I'm opening this issue as a remainder to myself later or kind request for help if someone else wants to contribute sample unit tests.

This patch adds a build hook to run tests as part of the build flow in OpenShift:

diff --git a/openshift/templates/cakephp-mysql.json b/openshift/templates/cakephp-mysql.json
index 52143da..c1140b0 100644
--- a/openshift/templates/cakephp-mysql.json
+++ b/openshift/templates/cakephp-mysql.json
@@ -106,7 +106,10 @@
               "secret": "${GITHUB_WEBHOOK_SECRET}"
             }
           }
-        ]
+        ],
+        "postCommit": {
+          "script": "./Console/cake test"
+        }
       }
     },
     {
diff --git a/openshift/templates/cakephp.json b/openshift/templates/cakephp.json
index b77dc0c..dae89ff 100644
--- a/openshift/templates/cakephp.json
+++ b/openshift/templates/cakephp.json
@@ -31,7 +31,7 @@
           }
         ],
         "selector": {
-          "name": "cakephp-example" 
+          "name": "cakephp-example"
         }
       }
     },
@@ -106,7 +106,10 @@
               "secret": "${GITHUB_WEBHOOK_SECRET}"
             }
           }
-        ]
+        ],
+        "postCommit": {
+          "script": "./Console/cake test"
+        }
       }
     },
     {

Note: ./Console/cake test might need extra arguments. See http://book.cakephp.org/2.0/en/development/testing.html (since apparently we're using 2.x as of now).

It might be even just cake test, but we need phpunit installed. I tried to make at least the build hook working and leave actual tests for later, but I'm giving up trying to make it work for now 💦