acu145113 fix DNS setup on windows
acu145113 set DNSs after adaptor configuration

This will prevent DNS configuration issues on Windows.
Merge branch 'ivory_13_18_acu129277_vscale_support_v6.0' into ivory_13_20_acu145113_fix_windows_dns_setup

Conflicts:
	lib/clouds/clouds/vscale.rb
	spec/clouds/clouds/vscale_spec.rb
Merge pull request #290 from rightscale/ivory_13_20_acu145113_fix_windows_dns_setup

Fix static DNS configuration on Windows