Move days of unstable runs

[amanda11]

Changing days of builds as follows (times based on US/Pacific):

• Tues @ 18:00 Orphan run (cicd repo)
• Wed @ 6:00 Stable run (cd repo - no change)
• Wed @ 8:00 Unstable run (ci repo)
• Wed @ 18:00 Orphan run (cicd repo)
• Thur @ 8:00 Unstable run (ci repo)
• Thur @ 18:00 Orphan run (cicd repo)

If this runs ok, then propose that we have AWS Lambda control the EC2 instance with:

• Start Tues@16:00
• Stop Thurs@20:00
  Therefore reducing to 52 hrs a week instead of 168.

This then means each week we still have 2 unstable, and 1 stable. We have orphan run after each day of running CIs but also at startup - in case of any problems previous week. Should enable servers to be up long enough to debug any problems.

[amanda11]

Part of StackStorm/community#104