* Protobuf Java/Core Tests running w/ Bazel.
Also integrates rules_jvm_external and migrates existing maven deps
in place.
* Add test_suite target that maps to rule name.
* Lite tests passing in Bazel
* util tests passing with Bazel.
* Add conformance and build testing to //java:core
* Cleanup bzl style and lock down access to failure lists.
* Adding Java Lite conformance tests.
* rm newline
* parameterize conformance_test
This makes usage of failure lists more explicit.
* restrict visibility more for newly added libs and fix formatting.
* fix formatting and visibility.
* move testing.bzl to an internal package.
* fix file formatting.
* moving conformance_test to internal.bzl
