Use domain:hostAddr instead of unsupported domain:hostObj

[lato333]

nic.at currently does not support domain:hostObj.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<epp xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:ietf:params:xml:ns:epp-1.0" xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0 epp-1.0.xsd">
  <response>
    <result code="2306">
      <msg>Parameter value policy error</msg>
    </result>
    <extension>
      <conditions xmlns="http://www.nic.at/xsd/at-ext-result-1.0" xsi:schemaLocation="http://www.nic.at/xsd/at-ext-result-1.0%20at-ext-result-1.0.xsd">
        <condition>
          <msg>EPP-Protocol-HostObjNotSupported</msg>
          <details>Host objects are not supported</details>
        </condition>
      </conditions>
    </extension>
   ...
</epp>

Change sets $forcehostattr=true (Default: false) to use domain:hostAddr instead.