Add authorizations to permissions so that the definition of a permission (or role) is explicit

Add authorizations to permissions so that the definition of a permission (or role) is explicit.

A new table needs to be created to store the authorizations:

TABLE roleauthorization (
  authorization_id VARCHAR(100) NOT NULL,
  authorization_name VARCHAR(255) NOT NULL,
  resource_type_id INTEGER NOT NULL,
  PRIMARY KEY(authorization_id)
)

A new table needs to be added to map authorizations to permissions

TABLE permission_roleauthorization (
  permission_id BIGINT NOT NULL,
  authorization_id VARCHAR(100) NOT NULL,
  PRIMARY KEY(permission_id, authorization_id)
);

A new Entity needs to be created to hold the authorization record data (org.apache.ambari.server.orm.entities.AuthorizationEntity).

The existing PermissionEntity org.apache.ambari.server.orm.entities.PermissionEntity needs to be updated to include AuthorizationEntities.