I18n: convert weekly meeting to office hours

I18n team decided to have office hours instead of meetings.

This commit reflects the decision with meeting id, description
and releasing meeting time slot on #openstack-meeting IRC channel.
Also, I got approval from Frank (current PTL) that I would serve
as a co-chair.

Reference
 - http://lists.openstack.org/pipermail/openstack-i18n/2018-April/003238.html

Change-Id: I37501c88eb31b347cfa4e7329cc958c7a12870f8

meetings/I18n-team-office-hour.yaml

@@ -0,0 +1,21 @@
+project:  I18N Team Office hours
+meeting_id: openstack_i18n_office_hour
+agenda_url: https://wiki.openstack.org/wiki/Meetings/I18nTeamMeeting
+schedule:
+  - time:       '0700'
+    day:        Thursday
+    irc:        openstack-i18n
+    frequency:  biweekly-even
+    start_date: 20160114
+  - time:       '1300'
+    day:        Thursday
+    irc:        openstack-i18n
+    frequency:  biweekly-odd
+    start_date: 20160107
+chair:  Frank Kloeker (eumel8), Ian Y. Choi (ianychoi)
+description:  >
+  The OpenStack I18n Team holds public weekly office hours.
+  Everyone interested in or having questions on translation,
+  internationalization, and/or localization should attend!
+  If you add an item to the agenda, please include details
+  so we know who did, and who would be best lead for the discussion.

meetings/i18N-team-meeting.yaml

@@ -1,17 +0,0 @@
-project:  I18N Team Meeting
-meeting_id: openstack_i18n_meeting
-agenda_url: https://wiki.openstack.org/wiki/Meetings/I18nTeamMeeting
-schedule:
-  - time:       '0700'
-    day:        Thursday
-    irc:        openstack-meeting
-    frequency:  biweekly-even
-    start_date: 20160114
-  - time:       '1300'
-    day:        Thursday
-    irc:        openstack-meeting
-    frequency:  biweekly-odd
-    start_date: 20160107
-chair:  Frank Kloeker (eumel8)
-description:  >
-  Discuss translation/i18n/l10n related topics here.