Add retries to repository sync tasks

Repository syncs can fail for many reasons that may be transient.
Add configurable retries to sync tasks, by default retrying up to three
times if there is a sync failure.

Author: m-bull

roles/pulp_repository/defaults/main.yml

@@ -8,3 +8,10 @@ pulp_repository_container_repos: []
 pulp_repository_deb_repos: []
 pulp_repository_python_repos: []
 pulp_repository_rpm_repos: []
+
+pulp_repository_sync_retries: 3
+
+pulp_repository_container_repos_sync_retries: "{{ pulp_repository_sync_retries }}"
+pulp_repository_deb_repos_sync_retries: "{{ pulp_repository_sync_retries }}"
+pulp_repository_python_repos_sync_retries: "{{ pulp_repository_sync_retries }}"
+pulp_repository_rpm_repos_sync_retries: "{{ pulp_repository_sync_retries }}"

roles/pulp_repository/tasks/container.yml

@@ -55,3 +55,7 @@
   loop: "{{ pulp_repository_container_repos | map(attribute='name') }}"
   loop_control:
     index_var: repository_index
+  register: pulp_repository_container_repos_sync
+  until: "pulp_repository_container_repos_sync is not failed" 
+  retries: "{{ pulp_repository_container_repos_sync_retries }}"
+  delay: 1

roles/pulp_repository/tasks/deb.yml

@@ -56,3 +56,7 @@
   loop: "{{ pulp_repository_deb_repos | map(attribute='name') }}"
   loop_control:
     index_var: repository_index
+  register: pulp_repository_deb_repos_sync
+  until: "pulp_repository_deb_repos_sync is not failed" 
+  retries: "{{ pulp_repository_deb_repos_sync_retries }}"
+  delay: 1

roles/pulp_repository/tasks/python.yml

@@ -55,3 +55,8 @@
   loop: "{{ pulp_repository_python_repos | map(attribute='name') }}"
   loop_control:
     index_var: repository_index
+  register: pulp_repository_python_repos_sync
+  until: "pulp_repository_python_repos_sync is not failed" 
+  retries: "{{ pulp_repository_python_repos_sync_retries }}"
+  delay: 1
+

roles/pulp_repository/tasks/rpm.yml

@@ -53,3 +53,7 @@
   loop: "{{ pulp_repository_rpm_repos | map(attribute='name') }}"
   loop_control:
     index_var: repository_index
+  register: pulp_repository_rpm_repos_sync
+  until: "pulp_repository_rpm_repos_sync is not failed" 
+  retries: "{{ pulp_repository_rpm_repos_sync_retries }}"
+  delay: 1