ipaclient: ipaclient_setup_nss also needs krb_name parameter

With the fix to defer creating the final krb5.conf on clients a bug has
been introduced with ipaclient_setup_nss: The krb_name parameter that
points to the temporary krb5 configuration was not added to the module.

With a properly configured DNS (like for example IPA DNS) the krb TXT
records have been present in the DNS configuration. These have been used
automatically as a fallback and broke server affinity for the client.
Without the TXT records creating the IPA NSS database failed with
 "Cannot find KDC for realm ..".

The krb_name parameter has been added to ipaclient_setup_nss and is also
properly set in tasks/install.yml.