ported timer.py callback to v2

lib/ansible/plugins/callback/timer.py

+import os
+import datetime
+from datetime import datetime, timedelta
+
+from ansible.plugins.callback import CallbackBase
+
+class CallbackModule(CallbackBase):
+    """
+    This callback module tells you how long your plays ran for.
+    """
+    CALLBACK_VERSION = 2.0
+    CALLBACK_TYPE = 'aggregate'
+
+    start_time = datetime.now()
+    
+    def __init__(self, display):
+
+        super(CallbackModule, self).__init__(display)        
+
+        start_time = datetime.now()
+        self._display.warning("Timerv2 plugin is active from included callbacks.")
+
+    def days_hours_minutes_seconds(self, timedelta):
+        minutes = (timedelta.seconds//60)%60
+        r_seconds = timedelta.seconds - (minutes * 60)
+        return timedelta.days, timedelta.seconds//3600, minutes, r_seconds
+
+    def playbook_on_stats(self, stats):
+        self.v2_playbook_on_stats(stats)
+        
+    def v2_playbook_on_stats(self, stats):
+        end_time = datetime.now()
+        timedelta = end_time - self.start_time
+        self._display.display("Playbook run took %s days, %s hours, %s minutes, %s seconds" % (self.days_hours_minutes_seconds(timedelta)))
+