Fix multiple problems in multihost migration test server part

@lmr I don't know why are removed your and ypu commits da2292c b1d7886 f911b90.
But without ypu commit it will not work:-)

***require*** https://github.com/autotest/tp-qemu/pull/125

This pull req solve:
* client dns name problem
* moves configuration to server part of configuration
* fix path of results
     ``` resultsxxx\multitost-mitraiton\results\subtestsname\(dns|ip)name\results ```
* solve basic boot strap of qemu virt tests 
Which version of autotest server do you use? It works for me in last version of autotest server