Adding a node to a proposal doesn't add the roles to the node

[killermoehre]

So, I added with crowbarctl proposal edit nfs_client nova -m --data="{ 'deployment': { 'nfs_client': { 'elements': { 'nfs-client': ['hostname-C.domain']}}}}" a host to a proposal and committed it. After the commit, the node is in the proposal

# crowbarctl proposal show nfs_client nova --format json
{
 "id": "nfs_client-nova",
 "description": "Setup of NFS mounts",
 "attributes": {
  "nfs_client": {
   "exports": {
    "nova": {
     "nfs_server": "192.168.128.251",
     "export": "/export",
     "mount_path": "/var/lib/nova/instances",
     "mount_options": [
      "vers=3",
      "sec=sys",
      "x-systemd.automount"
     ]
    }
   }
  }
 },
 "deployment": {
  "nfs_client": {
   "crowbar-revision": 0,
   "crowbar-applied": true,
   "element_states": {
    "nfs-client": [
     "readying",
     "ready",
     "applying"
    ]
   },
   "elements": {
    "nfs-client": [
     "hostname-A.domain",
     "hostname-B.domain",
     "hostname-C.domain"
    ]
   },
   "element_order": [
    [
     "nfs-client"
    ]
   ],
   "config": {
    "environment": "nfs_client-base-config",
    "mode": "full",
    "transitions": false,
    "transition_list": [

    ]
   },
   "crowbar-committing": false,
   "crowbar-status": "success",
   "crowbar-failed": "",
   "crowbar-queued": false
  }
 }
}

but if I check with the actual host, the roles for nfs_client are not added

# crowbarctl node show hostname-C.domain --filter roles --format json
[
 "crowbar-hostname-C_domain",
 "deployer-client",
 "deployer-config-default",
 "bmc-nat-client",
 "ipmi-config-default",
 "network",
 "network-config-default",
 "dns-client",
 "dns-config-default",
 "logging-client",
 "logging-config-default",
 "ntp-client",
 "ntp-config-default",
 "provisioner-base",
 "provisioner-config-default"
]

the same happens if I try to apply this way the nova barclamp. What do I miss?