[ceph] Use the Mirantis repo for patched Ceph packages

Squid 19.2.1 contains an RGW bug that causes all of the ACL-based
Tempest tests to fail. This pulls Ceph packages from the Mirantis
repo instead of download.ceph.com. The Mirantis build includes a
patch for this issue.

Change-Id: Iaa50a7dc7928240579e221b7b35e736dd790c85d

zuul.d/ceph.yaml

@@ -47,9 +47,9 @@
           build_args:
             - "FROM='ubuntu:jammy'"
             - "CEPH_RELEASE='squid'"
-            - "CEPH_RELEASE_TAG='19.2.1-1jammy'"
-            - "CEPH_REPO='http://download.ceph.com/debian-squid'"
-            - "CEPH_KEY='http://download.ceph.com/keys/release.asc'"
+            - "CEPH_RELEASE_TAG='19.2.1-1~jammy'"
+            - "CEPH_REPO='http://mirror.mirantis.com/acicd/ceph-19.2.1.patch1/jammy'"
+            - "CEPH_KEY='http://mirror.mirantis.com/acicd/ceph-19.2.1.patch1/jammy/release.asc'"
           tags:
             - latest-ubuntu_jammy
             - "ubuntu_jammy_19.2.1-1-{{ currentdate }}"