[CB-4732] Re-writing build script to use async

Added --query flag to request keystorepass

Reviewed by Bryan Higgins <bhiggins@blackberry.com>
Tested by Tracy Li <tli@blackberry.com>
[CB-4732] Removing buildId validation as it is no longer necessary

Reviewed by Bryan Higgins <bhiggins@blackberry.com>
Tested by Tracy Li <tli@blackberry.com>