Deploy hook ssh support scp

[Hawthorn2013]

Deploy hook ssh put file content in ssh cmd. This usage causes the cmd too long to execute on some remote server, even if DEPLOY_SSH_MULTI_CALL is set to yes.

This pull request implements deployment of file by scp, avoiding the problem of excessively long cmd.

[Neilpang]

don't change the default behavior. It was intended not to use scp.

[PMExtra]

This will be solved with #4091