Adds "ssh_needs_tty" general parameter, and rsync copy option #45
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I ran into an issue where commands were failing due to an "stdin: is not a tty" messages from the host. To resolve, I added a general flag "ssh_needs_tty", which adds "-t" to the ssh command.
Additionally, when using rsync and a large set of files, I added an additional flag to the deployment options which first copies the prior release to the new release, then rsync's the new release.
Using this flag, my deployment goes from:
to this: