Replace hyphens with underscores for meeting_id

Update the YAML files to use underscores instead of hyphens for the
'meeting_id' field.

Also handle 'meeting_id' fields with hyphens by converting them to
underscores when generating the URL to the Logs. This will handle
possible future commits where a 'meeting_id' is added with a hyphen.

Change-Id: I7f6574c282e3bcf06c7916334a10332ef8d0cbae

meetingindex.jinja

@@ -62,7 +62,7 @@ meeting</div>
 Chair (to contact for more information): {{ meeting.chair }}</div>
 {% if meeting.extras.meeting_id %}
    <div><span class="glyphicon glyphicon-fast-backward"></span>&nbsp;
-Logs from <a href="http://eavesdrop.openstack.org/meetings/{{meeting.extras.meeting_id}}/">past meetings</a></div>
+Logs from <a href="http://eavesdrop.openstack.org/meetings/{{meeting.extras.meeting_id|replace('-', '_')}}/">past meetings</a></div>
 {% endif %}
 {% if meeting.extras.agenda_url %}
    <div><span class="glyphicon glyphicon-list-alt"></span>&nbsp;

meetings/container-networking-team-meeting.yaml

@@ -1,5 +1,5 @@
 project:  Container Networking Team Meeting
-meeting_id: container-networking
+meeting_id: container_networking
 agenda_url: https://wiki.openstack.org/w/index.php?title=Meetings/Containers
 schedule:
   - time:       '1800'

meetings/ironic-qa.yaml

@@ -6,7 +6,7 @@ schedule:
     frequency:  weekly
 chair:  John L. Villalovos
 agenda_url: https://wiki.openstack.org/wiki/Meetings/Ironic-QA
-meeting_id: ironic-qa
+meeting_id: ironic_qa
 description:  >
   If you're interested in QA, testing, or 3rd party CI for Ironic, please join
   us. This meeting is where we'll talk about QA, testing, and 3rd party CI as

meetings/nova-notification-meeting.yaml

@@ -1,5 +1,5 @@
 project:  Nova Notification Meeting
-meeting_id: nova-notification
+meeting_id: nova_notification
 agenda_url: https://wiki.openstack.org/wiki/Meetings/NovaNotification
 schedule:
   - time:       '2000'