* Allow compiling of everything with java 11
* Instruct CircleCI to use java 11 be default
* Forbid running some tests on java11
* Muzzle uses ClassLoader.platformClassLoader as parent for user-space classloader
* Rename hibernate modules
* Update tracer name
* Change from gradle inheritance to composition
This will make it possible to have empty "grouping" modules, e.g.
instrumentation:hibernate.
* Introduce empty hibernate grouping module
Nikita Salnikov-Tarnovski
Trask Stalnaker