Make shebangs consistent in ci scripts

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Rename function in test_helpers

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Use test_helpers in AWS BATs script

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Retry director targeting when running BATs

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Do not retry BATs

Retrying generally does not help and the issue should be fixed soon.

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Remove duplicate bosh clone in bats scripts

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>