* Check for post-deployment Flyway script changes
Add a script that checks for changes to scripts that
have been deployed to sandbox. This is test in to
be invoked in presubmit and ci.
Extracted common shell functions to an 'rc' file.
Also renamed existing script to be consistent with
other shell scripts.
A helper script to run server/schema compatibility tests from
a CI platform. It allows the caller to choose a system under
test (sql or nomulus) and to specify the deployed version
by environment (sandbox or production).