test/buildboxcommon_localexecutionclient.t.cpp: Ignore SIGPIPE
Description
gRPC uses MSG_NOSIGNAL
or SO_NOSIGPIPE
where available, however, not all operating systems support that. Ignore SIGPIPE
to avoid the test being terminated when sending a message on a socket that is no longer connected.
This fixes test failures on non-Linux systems and is similar to buildbox-worker!128 (merged).