Retire puppet-ec2api: Retire Repository from the Governance Repository

EC2 API was marked inactive during this cycle and has been excluded
from 2024.1 release. Because Puppet OpenStack modules are tightly
coupled with OpenStack's release cycle, we agreed to retire this module
and not to create a 2024.1 release[1].

[1] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack.org/message/BVF4I2METEA7HQB3KRF63JTBR4C6ZYEJ/

Depends-on: https://review.opendev.org/c/openstack/puppet-ec2api/+/912711
Change-Id: I67215fa21d934a9e4af3f882ec40053242d63627

reference/legacy.yaml

@@ -1970,6 +1970,10 @@ Puppet OpenStack:
       repos:
         - openstack/puppet-qdr
       retired-on: 2024-02-06
+    puppet-ec2api:
+      repos:
+        - openstack/puppet-ec2api
+      retired-on: 2024-03-13
 
 qinling:
   retired-on: 2020-11-27

reference/projects.yaml

@@ -2070,9 +2070,6 @@ Puppet OpenStack:
     puppet-designate:
       repos:
         - openstack/puppet-designate
-    puppet-ec2api:
-      repos:
-        - openstack/puppet-ec2api
     puppet-glance:
       repos:
         - openstack/puppet-glance