Small patch for handling errors in node add
Small patch for handling errors in node add

This small path hopefully fixes the handling of ssh verify errors in
node add (note: untested).

Reviewed-by: ultrotter

andir/ganeti,mbakke/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,leshchevds/ganeti,onponomarev/ganeti,leshchevds/ganeti,bitemyapp/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,andir/ganeti,andir/ganeti,ganeti/ganeti,mbakke/ganeti,mbakke/ganeti,leshchevds/ganeti,ganeti/ganeti,dimara/ganeti,grnet/snf-ganeti,dimara/ganeti,apyrgio/ganeti,apyrgio/snf-ganeti,ganeti/ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,yiannist/ganeti,grnet/snf-ganeti,apyrgio/ganeti,yiannist/ganeti