Add OpenCover coverage for C#

Fixing 'all' run tests target.

Disabling qps openloop's test.

remove log spam

PHP: ran php-cs-fixer to comply with php coding standard

PHP: fix inconsistent array notation

Release 0 11 -> master

Prevent run_tests.py from running make if the language has no make targets

Skip running stress_tests on jenkins by run_tests.py

Use proper shortname for sanity tests

Format ObjC comment docs as Cocoadocs

Point RouteGuide pods to local sources; update requirements

Explicitly use grpc::string instead of std::string to be consistent with other test code

Remove alpha tests.

Warnings will be emitted when trying to import through alpha packages.

Compile against Node's version of zlib

Mark WaitForInitialMetadata as override, for Clang

issue addressed by commit: e6cd0e70, the right way)