fix: migration commands must have consistency set to ALL

- the migration commands need to have the consistency level set to ALL
- max schema agreement time is bumped up to 30 seconds

Change-Id: I2940de1b81a630ea4cea305c3855ef78de9b5733

etc/poppy.conf

@@ -70,7 +70,7 @@ password = cassandra_password
 # requires the datacenter option in [DEFAULT] to be configured.
 load_balance_strategy = RoundRobinPolicy
 consistency_level = ONE
-max_schema_agreement_wait = 10
+max_schema_agreement_wait = 30
 keyspace = poppy
 # Replication strategy to use for the keyspace. This value is plugged into
 # `map` as show in the syntax here: http://www.datastax.com/documentation/cql/3

poppy/storage/cassandra/driver.py

@@ -15,6 +15,7 @@
 
 """Cassandra storage driver implementation."""
 
+import copy
 import multiprocessing
 import os
 import ssl
@@ -118,7 +119,10 @@ def _connection(conf, datacenter, keyspace=None):
     except cassandra.InvalidRequest:
         _create_keyspace(session, keyspace, conf.replication_strategy)
 
-    _run_migrations(conf.migrations_path, session)
+    migration_session = copy.copy(session)
+    migration_session.default_consistency_level = \
+        getattr(cassandra.ConsistencyLevel, 'ALL')
+    _run_migrations(conf.migrations_path, migration_session)
 
     session.row_factory = query.dict_factory