PUT /v2/{tenant_id:CALL_EXTERNAL|syntribos.extensions.identity.client:get_project_id_v3:[]|}/consistencygroups/{consistencygroup_id:5b363906-6967-463c-bc05-6d284cf875ee}/update HTTP/1.1
Content-type: application/json
X-Auth-Token: CALL_EXTERNAL|syntribos.extensions.identity.client:get_scoped_token_v3:["user"]|

{
    "consistencygroup": {
        "name": "my_cg",
        "description": "My consistency group",
        "add_volumes": "volume-uuid-1,volume-uuid-2",
        "remove_volumes": "volume-uuid-8,volume-uuid-9"
    }
}