Implement configurable replcfg (client-side)

Implements administrator-selectable replication configurations for new
pools in PVC clusters, overriding the default of copies=3,mincopies=2.

client-api/api_lib/pvcapi.py

@@ -870,12 +870,12 @@ def ceph_pool_list(limit=None):
     pvc_common.stopZKConnection(zk_conn)
     return flask.jsonify(retdata), retcode
 
-def ceph_pool_add(name, pgs):
+def ceph_pool_add(name, pgs, replcfg):
     """
     Add a Ceph RBD pool to the PVC Ceph storage cluster.
     """
     zk_conn = pvc_common.startZKConnection(config['coordinators'])
-    retflag, retdata = pvc_ceph.add_pool(zk_conn, name, pgs)
+    retflag, retdata = pvc_ceph.add_pool(zk_conn, name, pgs, replcfg)
     if retflag:
         retcode = 200
     else:

client-api/pvc-api.py

@@ -755,6 +755,13 @@ def api_ceph_pool_root():
             # We default to a very small number; DOCUMENT THIS
             pgs = 128
 
+        # Get replication configuration
+        if 'replcfg' in flask.request.values:
+            replcfg = flask.request.values['replcfg']
+        else:
+            # We default to copies=3,mincopies=2
+            replcfg = 'copies=3,mincopies=2'
+
         return pvcapi.ceph_pool_add(pool, pgs)
 
 @api.route('/api/v1/storage/ceph/pool/<pool>', methods=['GET', 'DELETE'])