host resources.
install, activate, fence, deactivate, approve, iscsilogin, iscsidiscover and commitnetconfig.
root_password element.
POST /rhevm-api/hosts/2ab5e1da-b726-4274-bbf7-0a42b16a0fc3/install HTTP/1.1
Content-type: application/xml
<action>
<root_password>p@55w0Rd!</root_password>
</action>