Added 'project' column to node table

Without a 'project' table, we cannot tell which project a node belongs
to.

senlin/db/sqlalchemy/migrate_repo/versions/001_first_version.py

@@ -74,6 +74,7 @@ def upgrade(migrate_engine):
         sqlalchemy.Column('profile_id', sqlalchemy.String(36),
                           sqlalchemy.ForeignKey('profile.id'),
                           nullable=False),
+        sqlalchemy.Column('project', sqlalchemy.String(36)),
         sqlalchemy.Column('index', sqlalchemy.Integer),
         sqlalchemy.Column('role', sqlalchemy.String(64)),
         sqlalchemy.Column('init_time', sqlalchemy.DateTime),

senlin/db/sqlalchemy/models.py

@@ -126,6 +126,7 @@ class Node(BASE, SenlinBase, SoftDelete):
                                    sqlalchemy.ForeignKey('cluster.id'))
     profile_id = sqlalchemy.Column(sqlalchemy.String(36),
                                    sqlalchemy.ForeignKey('profile.id'))
+    project = sqlalchemy.Column(sqlalchemy.String(36))
     index = sqlalchemy.Column(sqlalchemy.Integer)
     role = sqlalchemy.Column(sqlalchemy.String(64))