backup: adding condition before setting backup

Signed-off-by: Alexis Pentori <alexis@status.im>

README.md

@@ -31,6 +31,13 @@ postgres_ha_databases:
 ```
 The `user` field is optional. DB name is used by default.
 
+Backup settings can be adjusted using:
+```yaml
+postgres_ha_backup: false
+postgres_ha_backup_frequency: 'weekly'
+postgres_ha_backup_timeout: 1200
+```
+
 # Management
 
 The service is managed using [Docker Compose](https://docs.docker.com/compose/):

defaults/main.yml

@@ -37,6 +37,7 @@ postgres_ha_databases: []
 #    pass: 'dbpass'
 
 # Backups
+postgres_ha_backup: true
 postgres_ha_backup_service_name: 'dump-{{ postgres_ha_service_name }}'
 postgres_ha_backup_frequency: daily
 postgres_ha_backup_timeout: 600

tasks/main.yml

@@ -23,4 +23,6 @@
     loop_var: db
 
 - import_tasks: consul.yml
+
 - import_tasks: backup.yml
+  when: postgres_ha_backup