Config flag to disable port forwarding when executing ssh commands on vm

[chqr]

We have a slightly quirky network setup, where vms are not typically in the same network as our Xen servers. This means that it is impossible to ssh into a new vm from a Xen server dom0.

Would you be open to adding a config flag to skip setting up port forwarding during the ssh step and instead contact the guest directly? If so, I will take a whack at a PR (no Go experience, unfortunately, so it may be a while)

[gaserre]

You may be in luck. I do that for our setup. I'll see if I can push a branch up to my github fork tonight, if it's not there already.

[chqr]

@gaserre that would be awesome, thanks!

[gaserre]

@chqr Please give https://github.com/gaserre/packer/tree/gserre_ssh_no_proxy a try.
Note that this is not a xenserver plugin, but a packer fork with xenserver integrated as a builder. I have tested xenserver-iso, but not xenserver-xva.
For background, see #80

[chqr]

@gaserre thanks again, this is definitely working for us! (Had to govendor fetch github.com/xenserver/go-xenserver-client in order to get the build working, in case anyone else wants to build it)

Are you planning to submit the no proxy feature as a PR to this repo, at least until #80 is resolved?