[qa] Transition Pike to End of Life

This patch moves devstack and grenade projects' stable/pike branch to
End of Life. These are the last open stable/pike branches (together
with requirements repository) as these need to be transition the last.

Change-Id: If29458bf137e4b0c7affc73e6d62e66cece851b6

deliverables/pike/devstack.yaml

@@ -4,6 +4,11 @@ release-model: untagged
 team: 'Quality Assurance'
 type: other
 stable-branch-type: tagless
+releases:
+  - version: pike-eol
+    projects:
+      - repo: openstack/devstack
+        hash: a0fab742f1c38a6082e04f958b8367ca4568e5e3
 branches:
   - location:
       openstack/devstack: 98ab7d9646730f02983380648831aa2682abcc0c

deliverables/pike/grenade.yaml

@@ -4,6 +4,11 @@ release-model: untagged
 team: 'Quality Assurance'
 type: other
 stable-branch-type: tagless
+releases:
+  - version: pike-eol
+    projects:
+      - repo: openstack/grenade
+        hash: 948ef7833149dcb982054a947507b9e32f007d34
 branches:
   - location:
       openstack/grenade: 1e3a981a6cf6216daa60fcd7583ad6e9cb1cefcc