CFY-7485 Drop Stage and Composer tables before trying to drop the user (#719)
CFY-7485 Drop Stage and Composer tables before trying to drop the user (#719)

In cases where trying several times to bootstrap the manager, this will
fix the problem of trying to drop a user that has tables associated with
him
cloudify-cosmo/cloudify-manager-blueprints,cloudify-cosmo/cloudify-manager-blueprints