diff --git a/test-requirements.txt b/test-requirements.txt
index 0676e3726e..eeec94ddff 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,6 +9,8 @@ fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0 # BSD
 python-subunit>=0.0.18 # Apache-2.0/BSD
 sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+psycopg2>=2.5 # LGPL/ZPL
+PyMySQL!=0.7.7,>=0.6.2 # MIT License
 oslosphinx>=4.7.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
diff --git a/tox.ini b/tox.ini
index ce72bbfd72..1b587be2d2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,6 +58,9 @@ sitepackages = True
 [testenv:releasenotes]
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
+[testenv:py27]
+setenv = OS_FAIL_ON_MISSING_DEPS=1
+
 [testenv:pep8]
 basepython = python2.7
 deps =
diff --git a/vmware_nsx/db/extended_security_group.py b/vmware_nsx/db/extended_security_group.py
index 94011ca34a..d2765f5872 100644
--- a/vmware_nsx/db/extended_security_group.py
+++ b/vmware_nsx/db/extended_security_group.py
@@ -18,6 +18,7 @@ from oslo_utils import uuidutils
 import sqlalchemy as sa
 from sqlalchemy import orm
 from sqlalchemy.orm import exc
+from sqlalchemy import sql
 
 from neutron.api.v2 import attributes
 from neutron.common import utils as n_utils
@@ -41,7 +42,8 @@ class NsxExtendedSecurityGroupProperties(model_base.BASEV2):
                                                 ondelete="CASCADE"),
                                   primary_key=True)
     logging = sa.Column(sa.Boolean, default=False, nullable=False)
-    provider = sa.Column(sa.Boolean, default=False, nullable=False)
+    provider = sa.Column(sa.Boolean, default=False, server_default=sql.false(),
+                         nullable=False)
     security_group = orm.relationship(
         securitygroups_db.SecurityGroup,
         backref=orm.backref('ext_properties', lazy='joined',
diff --git a/vmware_nsx/db/migration/alembic_migrations/versions/newton/contract/d49ac91b560e_nsxv_lbaasv2_shared_pools.py b/vmware_nsx/db/migration/alembic_migrations/versions/newton/contract/d49ac91b560e_nsxv_lbaasv2_shared_pools.py
index 47ac1e2ed8..0951873bbe 100644
--- a/vmware_nsx/db/migration/alembic_migrations/versions/newton/contract/d49ac91b560e_nsxv_lbaasv2_shared_pools.py
+++ b/vmware_nsx/db/migration/alembic_migrations/versions/newton/contract/d49ac91b560e_nsxv_lbaasv2_shared_pools.py
@@ -46,6 +46,6 @@ def upgrade():
 def change_pk_constraint(table_name, columns):
     inspector = reflection.Inspector.from_engine(op.get_bind())
     pk_constraint = inspector.get_pk_constraint(table_name)
-    op.drop_constraint(pk_constraint, table_name, type_='primary')
+    op.drop_constraint(pk_constraint.get('name'), table_name, type_='primary')
     op.drop_column(table_name, 'listener_id')
     op.create_primary_key(None, table_name, columns)
diff --git a/vmware_nsx/db/migration/models/head.py b/vmware_nsx/db/migration/models/head.py
index 822d71655c..5b2d618119 100644
--- a/vmware_nsx/db/migration/models/head.py
+++ b/vmware_nsx/db/migration/models/head.py
@@ -14,6 +14,8 @@
 
 from neutron.db.migration.models import head
 
+from vmware_nsx.db import extended_security_group  # noqa
+from vmware_nsx.db import extended_security_group_rule  # noqa
 from vmware_nsx.db import nsx_models  # noqa
 from vmware_nsx.db import nsxv_models  # noqa
 from vmware_nsx.db import vcns_models  # noqa
diff --git a/vmware_nsx/tests/unit/__init__.py b/vmware_nsx/tests/unit/__init__.py
index cd4e83d217..b1aba0a50d 100644
--- a/vmware_nsx/tests/unit/__init__.py
+++ b/vmware_nsx/tests/unit/__init__.py
@@ -16,8 +16,6 @@
 
 import os
 
-from networking_l2gw.db.l2gateway import l2gateway_models  # noqa
-
 from vmware_nsx.api_client import client as nsx_client
 from vmware_nsx.api_client import eventlet_client
 from vmware_nsx import extensions
diff --git a/vmware_nsx/tests/functional/db/__init__.py b/vmware_nsx/tests/unit/db/__init__.py
similarity index 100%
rename from vmware_nsx/tests/functional/db/__init__.py
rename to vmware_nsx/tests/unit/db/__init__.py
diff --git a/vmware_nsx/tests/functional/db/test_migrations.py b/vmware_nsx/tests/unit/db/test_migrations.py
similarity index 53%
rename from vmware_nsx/tests/functional/db/test_migrations.py
rename to vmware_nsx/tests/unit/db/test_migrations.py
index 0749cc79bb..639a2a43cf 100644
--- a/vmware_nsx/tests/functional/db/test_migrations.py
+++ b/vmware_nsx/tests/unit/db/test_migrations.py
@@ -22,11 +22,74 @@ from neutron.tests.functional.db import test_migrations
 from neutron.tests.unit import testlib_api
 
 from vmware_nsx.db.migration import alembic_migrations
-from vmware_nsx.db.models import head
+from vmware_nsx.db.migration.models import head
+
+#TODO(abhiraut): Remove this list from here once *aaS repos forms its
+#                own list.
+# Add *aaS tables to EXTERNAL_TABLES since they should not be
+# tested.
+LBAAS_TABLES = {
+    'nsxv_edge_monitor_mappings',
+    'nsxv_edge_pool_mappings',
+    'nsxv_edge_vip_mappings',
+
+    # LBaaS v2 tables
+    'lbaas_healthmonitors',
+    'lbaas_l7policies',
+    'lbaas_l7rules',
+    'lbaas_listeners',
+    'lbaas_loadbalancer_statistics',
+    'lbaas_loadbalanceragentbindings',
+    'lbaas_loadbalancers',
+    'lbaas_members',
+    'lbaas_pools',
+    'lbaas_sessionpersistences',
+    'lbaas_sni',
+}
+
+L2GW_TABLES = {
+    'l2gw_alembic_version',
+    'physical_locators',
+    'physical_switches',
+    'physical_ports',
+    'logical_switches',
+    'ucast_macs_locals',
+    'ucast_macs_remotes',
+    'vlan_bindings',
+    'l2gatewayconnections',
+    'l2gatewayinterfaces',
+    'l2gatewaydevices',
+    'l2gateways',
+    'pending_ucast_macs_remotes'
+}
+
+SFC_TABLES = {
+    'sfc_flow_classifier_l7_parameters',
+    'sfc_flow_classifiers',
+    'sfc_port_chain_parameters',
+    'sfc_service_function_params',
+    'sfc_port_pair_group_params',
+    'sfc_chain_classifier_associations',
+    'sfc_port_pairs',
+    'sfc_chain_group_associations',
+    'sfc_port_pair_groups',
+    'sfc_port_chains',
+    'sfc_uuid_intid_associations',
+    'sfc_path_port_associations',
+    'sfc_portpair_details',
+    'sfc_path_nodes',
+}
+
+TAAS_TABLES = {
+    'tap_services',
+    'tap_flows',
+    'tap_id_associations',
+}
 
 # EXTERNAL_TABLES should contain all names of tables that are not related to
 # current repo.
-EXTERNAL_TABLES = set(external.TABLES) - set(external.REPO_VMWARE_TABLES)
+EXTERNAL_TABLES = (set(external.TABLES) | LBAAS_TABLES |
+                   L2GW_TABLES | SFC_TABLES | TAAS_TABLES)
 
 
 class _TestModelsMigrationsFoo(test_migrations._TestModelsMigrations):
@@ -42,12 +105,13 @@ class _TestModelsMigrationsFoo(test_migrations._TestModelsMigrations):
         return head.get_metadata()
 
     def include_object(self, object_, name, type_, reflected, compare_to):
-        if type_ == 'table' and (name == 'alembic' or
+        if type_ == 'table' and (name.startswith('alembic') or
                                  name == alembic_migrations.VERSION_TABLE or
                                  name in EXTERNAL_TABLES):
             return False
-        else:
-            return True
+        if type_ == 'index' and reflected and name.startswith("idx_autoinc_"):
+            return False
+        return True
 
 
 class TestModelsMigrationsMysql(testlib_api.MySQLTestCaseMixin,