* Consolidate certificate supplier module
Both the proxy and the proxy needs certificate suppliers. The PR
consolidates the module that providings those bindings to a shared
module and switched the proxy to use that module. The prober currently
uses P12 file to store its certificates. I am debating keeping that
supplier ro converting them to PEM files for simplicity.
* Rename mode enum values to be more descriptive
* Update annotation names to be more descriptive
* Upgrade to Truth 1.0
Refactored fail(...) to assertWithMessage().fail().
Upgraded com.google.monitoring-client family of dependencies to 1.0.6
Also fixed bad use of io.StringIO (on binary buffer) recently introduced to
google-java-format-diff.py.
* Fix dependency-locking config
Reenable dependency locking after a bug errorneouly turned it off.
Removed the guava-related workaround that forcefully resolve to
the -jre distribution.
Enabled locking for buildSrc by updating its property file.
Updated all lock files.
