alembic: Add table for 'resource_list' PJSIP RLS type.

This change adds an Alembic migration which adds a
ps_resource_list table that can contain resource_list
RLS configuration objects.

ASTERISK-26929

Change-Id: I7c888fafc67b3e87012de974f71ca7a5b8b1ec05

contrib/ast-db-manage/config/versions/1d0e332c32af_create_rls_table.py

@@ -0,0 +1,39 @@
+"""create rls table
+
+Revision ID: 1d0e332c32af
+Revises: 2da192dbbc65
+Create Date: 2017-04-25 12:50:09.412662
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '1d0e332c32af'
+down_revision = '2da192dbbc65'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import ENUM
+
+YESNO_NAME = 'yesno_values'
+YESNO_VALUES = ['yes', 'no']
+
+def upgrade():
+    ############################# Enums ##############################
+
+    # yesno_values have already been created, so use postgres enum object
+    # type to get around "already created" issue - works okay with mysql
+    yesno_values = ENUM(*YESNO_VALUES, name=YESNO_NAME, create_type=False)
+
+    op.create_table(
+        'ps_resource_list',
+        sa.Column('id', sa.String(40), nullable=False, unique=True),
+        sa.Column('list_item', sa.String(2048)),
+        sa.Column('event', sa.String(40)),
+        sa.Column('full_state', yesno_values),
+        sa.Column('notification_batch_interval', sa.Integer),
+    )
+
+    op.create_index('ps_resource_list_id', 'ps_resource_list', ['id'])
+
+def downgrade():
+    op.drop_table('ps_resource_list')