Rename Gantt meeting to Nova Scheduler

As discussed in [1] we no longer want to use the word 'Gantt'
for describing our efforts related to the scheduler (including
the split).

That's only when the real fork will happen back in the Gantt
tree that we will again use the project name.

[1] http://lists.openstack.org/pipermail/openstack-dev/2015-March/060179.html

Change-Id: I972ae46efe60ce47ec9c63a8412696d2f2724b86

meetings/gantt-scheduler-team-meeting.yaml

@@ -1,9 +0,0 @@
-project:  Gantt (Scheduler) Team Meeting
-schedule:
-  - time:       '1500'
-    day:        Tuesday
-    irc:        openstack-meeting
-    frequency:  weekly
-chair:  Don Dugger
-description: >
-  This is the Gantt meeting

meetings/nova-scheduler-meeting.yaml

@@ -0,0 +1,10 @@
+project:  Nova Scheduler (ex. Gantt) Team Meeting
+schedule:
+  - time:       '1500'
+    day:        Tuesday
+    irc:        openstack-meeting
+    frequency:  weekly
+chair:  Don Dugger & Sylvain Bauza
+description: >
+  This is the meeting for all scheduler related efforts in Nova, and was
+  formerly called the Gantt meeting.