Oc 7436 server create work flow

hi,
following has been done:
1) quick create (dns name, image, size, location)
2) advanced create (quick create + host name + storage account)
3) handles quick create + host name
4) handles quick create + storage name
5) added boolean flag "--connect-to-existing-dns". with this option you need to specify the host name also.
6) version1- added support for random port number generation when connect to existing dns.