ansible over tor fixes



ansible.cfg
1. ansible defaults to using sftp which we have disabled in our config so had to change it to use scp
2. ssh connections kept timing out so we changed some of the timeouts. Will need to go back and test if these settings need to be adjusted any more
3. Enabled ssh pipelining [1]
   - this required disabling requiretty for the sudo group.
4. Disabled displaying the skipped hosts (build_securedrop_app_code, app-test...) so in production users would not be confused and think it was something was failing.