Fix Ceph repo URL / Add local repo for Ceph

In MCP, Decapod configuring the following repo:
https://github.com/Mirantis/ceph-lcm/blob/master/backend/common/decapod_common/configs/ceph-ansible-defaults.yaml#L27
In case of using local aptly repository we need to use .../jewel-xenial instead
of .../apt.

Change-Id: Id7ab39f72a409ea553e93c331d21c63c8c018e1e
diff --git a/linux/system/repo_local/ceph.yml b/linux/system/repo_local/ceph.yml
new file mode 100644
index 0000000..d28c0b6
--- /dev/null
+++ b/linux/system/repo_local/ceph.yml
@@ -0,0 +1,9 @@
+parameters:
+  linux:
+    system:
+      repo:
+        ceph:
+          refresh_db: ${_param:linux_repo_refresh_db}
+          source: "deb [arch=amd64] http://${_param:local_repo_url}/ubuntu-${_param:linux_system_codename}/ ${_param:apt_mk_version} ceph-mirantis"
+          architectures: amd64
+          key_url: "http://${_param:local_repo_url}/public.gpg"