Since filegroups are now correctly layered, build systems that needed these libs can now instantiate the filegroups as libs directly.

Use base64 encoded length for decoder table size calculation of binary headers

Fix a typo in the spec (and make corresponding change in node stress client)

Full stack server fuzzer

Add nodejs stress tests to the test-framework

Moving performance configuration to JSON

Run those json configurations as part of presubmits

Optionalize client config system

Added fuzzers for load_balancer_api parsing functions

Fix a typo in metrics.proto. 

Raise on unexpected metadata values

added grpclb support to sockaddr resolver