add timeout/retry for teardown instances

* was seeing jobs fail w/
  "Timed out waiting for server to get deleted, please check manually"
* add timout, same as boot timeout
* add retry, 2 retries w/ 60 second delay

Change-Id: I3da88e15c18cacf1a92ae23f4acccbf12c6742ce
reorg/run.sh: does not dump settings by default.

Introduces behavioural change in run.sh

- Deprecates the --no-create-run-settings: run_settings.yml is only
  created if --create-run-settings is passed explicitly

run.sh returns proper exit code

Change-Id: I2b21aa54a7db74b1cb2ad3c7e881c6542bc1b8e0