vars: Drop galera_percona_xtrabackup_repo_url variable

This variable was only used on Ubuntu distributions to select the
upstream Percona repository. There is not much point in having this
configurable so simply hardcode the upstream url to the repository
information and drop the variable.

Change-Id: I12088bd52ab3c392913385001fb71555e101ef56

defaults/main.yml

@@ -52,9 +52,6 @@ galera_repo: "{{ _galera_repo }}"
 # Set the gpg keys needed to be imported
 galera_gpg_keys: "{{ _galera_gpg_keys | default([]) }}"
 
-# Set the URL for the Percona Xtrabackup repository
-galera_percona_xtrabackup_repo_url: "{{ _galera_percona_xtrabackup_repo_url | default('') }}"
-
 # Set the rpo information for the Percona Xtrabackup repository
 galera_percona_xtrabackup_repo: "{{ _galera_percona_xtrabackup_repo | default({}) }}"
 

releasenotes/notes/deprecate-galera-percona-xtrabackup-repo-url-95614d0672f4bcb0.yaml

@@ -0,0 +1,6 @@
+---
+deprecations:
+  - |
+    The ``galera_percona_xtrabackup_repo_url`` variable which was used on
+    Ubuntu distributions to select the upstream Percona repository has been
+    dropped and the default upstream repository is always used from now on.

vars/ubuntu-16.04.yml

@@ -104,9 +104,8 @@ qpress_arch_sha256:
   ppc64le: "a31d3e00dbcec9b3f98eae82b261d054d0b80a57f4a38967d0e953811cb082f3"
 
 # Repositories
-_galera_percona_xtrabackup_repo_url: "http://repo.percona.com/apt"
 _galera_percona_xtrabackup_repo:
-  repo: "deb {{ galera_percona_xtrabackup_repo_url }} {{ ansible_distribution_release }} main"
+  repo: "deb http://repo.percona.com/apt {{ ansible_distribution_release }} main"
   state: "present"
   filename: "Percona"