remoteSession can't return values anymore

[longwa]

In 0.9.18, remoteSession could return values returned by commands executed.

However, the remoteSession calls were changed from def to void as part of the CompileStatic changes, which broke the ability to return anything from the executeSession closure.

The three remoteSession calls in SshDslEngine.groovy should return Object, not void.

[longwa]

Any plans to address this, I can submit a pull request if you want?

[aadamovich]

@longwa are you still up to create a pull request for this? it will be very helpful