[Reason] Make all .sh scripts executable.
[Reason] Make all .sh scripts executable.

Summary:Some of these were not executable for some reason.

Test Plan:

Reviewers:

CC:

cristianoc/reason,yunxing/reason,ak3n/reason,ak3n/reason,let-def/reason,ak3n/reason,facebook/reason,cristianoc/reason,yunxing/reason,ak3n/reason,yunxing/reason,chenglou/reason,chenglou/reason,chenglou/reason,yunxing/reason,facebook/reason,let-def/reason,let-def/reason,facebook/reason,cristianoc/reason