This adds a new --json flag to the compliance subcommand, which
will output the compliance test results as minified JSON to stdout.
Also a few other small additions:
- Exit 1 if compliance tests fail
- Use random port for test server using freeport library (added)
Signed-off-by: Josh Dolitsky <393494+jdolitsky@users.noreply.github.com>
1) github.com/jtblin/go-ldap-client is an abandoned project and not keeping
up with go modules, so pull that code in (single file, BSD license)
2) minor refactor ldap as a result of 1)
3) update go.mod
