tests: add more testing around server.uncompressed We already have testing for server.uncompressed in test-http*.t. However, it doesn't cover the new bundle2 use case. And, we don't have comprehensive testing of advertised capabilities. We add tests to test-clone-uncompressed.t that demonstrate behavior for both legacy and bundle2 configurations. If you look closely, the bundle2 capabilities are advertising stream support when it isn't enabled. That's a bug. In addition, while the client is smart enough to not request a stream clone when the server doesn't have the feature enabled, the getbundle wire protocol command is still sending stream clone data. This doesn't match the behavior of the legacy stream_out wire protocol command. That's also a bug. Tests have been added. While I was here, I also changed how the PID is recorded in $DAEMON_PIDS. If we kill a process, the PID formerly in $DAEMON_PIDS no longer exists. So we should replace that file instead of appending to it. Differential Revision: https://phab.mercurial-scm.org/D1928