Add postgresql.reload() function

rattail_fabric2/postgresql.py

@@ -54,6 +54,13 @@ def restart(c):
     c.sudo('systemctl restart postgresql.service')
 
 
+def reload(c):
+    """
+    Reload config for the PostgreSQL database service
+    """
+    c.sudo('systemctl reload postgresql.service')
+
+
 def sql(c, sql, database='', port=None):
     """
     Execute some SQL as the 'postgres' user.