Fixes #10215 - host update resets some attributes

[mbacovsky]

No description provided.

[domcleal]

Tests well, and looks sane 👍

[root@foreman ~]# hammer host update --puppet-classes ntp --name $(hostname)                                                            
Host updated
[root@foreman ~]# hammer host puppet-classes --host $(hostname)
---|-----
ID | NAME
---|-----
2  | ntp 
---|-----
[root@foreman ~]# hammer host update --comment $RANDOM --name $(hostname)                                                               
Host updated
[root@foreman ~]# hammer host puppet-classes --host $(hostname)                                                                         
---|-----
ID | NAME
---|-----
2  | ntp 
---|-----
[root@foreman ~]# hammer host info --name $(hostname) | grep -i comment
Comment:            5410

Logs look good:

Started PUT "/api/hosts/1" for 127.0.0.1 at 2015-04-22 13:34:52 +0000
2015-04-22 13:34:52 [I] Processing by Api::V2::HostsController#update as JSON
2015-04-22 13:34:52 [I]   Parameters: {"host"=>{"name"=>"foreman.example.com", "comment"=>"5410", "compute_attributes"=>{"volumes_attributes"=>{}}, "host_parameters_attributes"=>{}, "interfaces_attributes"=>{}}, "apiv"=>"v2", "id"=>"1"}

Previous it was:

2015-04-22 13:33:19 [I]   Parameters: {"host"=>{"name"=>"foreman.example.com", "comment"=>"2589", "compute_attributes"=>{"volumes_attributes"=>{}}, "owner_id"=>nil, "puppet_proxy_id"=>nil, "puppet_ca_proxy_id"=>nil, "puppetclass_ids"=>nil, "host_parameters_attributes"=>{}, "interfaces_attributes"=>{}}, "apiv"=>"v2", "id"=>"1"}

[tstrachota]

LGTM, @mbacovsky

[mbacovsky]

Thanks for testing, @domcleal, @tstrachota!