Add 2024.2/"D" Election timeline to the schedule

When trying to add this I noticed that there are duplicate
'project-specific' in the schedule for R-7, merge into a single list.

Depends-On: https://review.opendev.org/c/openstack/election/+/905152
Change-Id: I5e4be324118c7c47118ba39a5d29c7046755c9ca

doc/source/caracal/schedule.rst

@@ -373,3 +373,47 @@ Manila Bugsquash
 ^^^^^^^^^^^^^^^^
 
 Manila community event promoted in order to fast-track the closure of bugs.
+
+2024.2 TC and PTL Elections
+---------------------------
+
+.. _d-election-email-deadline:
+
+2024.2 Election Email Deadline
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Contributors that will be in the electorate for the upcoming election
+should confirm their gerrit email addresses by this date (February 28th, 2024
+at 00:00 UTC). Electorate rolls are generated after this date and ballots will
+be sent to the listed gerrit email address.
+
+.. _d-election-nominations:
+
+2024.2 Election Nomination Begins
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Candidates interested in serving for the next calendar year (TC), or
+development cycle (PTL) should announce their candidacies and platforms during
+this week.  Please see the `Election site`_ for specific timing information.
+
+.. _d-election-campaigning:
+
+2024.2 Election Campaigning Begins
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+The electorate has time to ask candidates questions about their platforms
+and debate topics before polling begins.  Please see the `Election site`_ for
+specific timing information.
+
+.. _d-election-voting:
+
+2024.2 Election Polling Begins
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Election polling for open seats on the TC and any required PTL elections.
+Please see the `Election site`_ for specific timing information.
+
+.. _d-election-close:
+
+2024.2 Election Polling Ends
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+All polls close in the 2024.2 Election and results announced.  Please see the
+`Election site`_ for specific timing information.
+
+.. _Election site: https://governance.openstack.org/election/

doc/source/caracal/schedule.yaml

@@ -103,6 +103,7 @@ cycle:
     start: '2024-02-19'
     x-project:
       - c-final-lib
+      - d-election-nominations
   - end: '2024-03-01'
     name: R-5
     start: '2024-02-26'
@@ -112,6 +113,8 @@ cycle:
       - c-final-clientlib
       - c-soft-sf
       - c-rf
+      - d-election-nominations
+      - d-election-email-deadline
     project-specific:
       - c-cinder-ci-checkpoint
   - end: '2024-03-08'
@@ -119,20 +122,25 @@ cycle:
     start: '2024-03-04'
     x-project:
       - c-cycle-highlights
+      - d-election-campaigning
   - end: '2024-03-15'
     name: R-3
     start: '2024-03-11'
     x-project:
       - c-rc1
       - c-hard-sf
+      - d-election-voting
   - end: '2024-03-22'
     name: R-2
     start: '2024-03-18'
+    x-project:
+      - d-election-voting
   - end: '2024-03-29'
     name: R-1
     start: '2024-03-25'
     x-project:
       - c-finalrc
+      - d-election-close
   - end: '2024-04-05'
     name: R+0
     start: '2024-04-01'