Jersey buffers responses (by default up to 8192 bytes) just so it can
add a content length to responses. We already buffer our responses to
serialize them as protos, so we can compute the content length
ourselves. Setting the buffer to zero disables buffering.
Use SPDX-License-Identifier copyright notices and apply consistently
to source throughout the repo. This covers all modules except
service. That one will be updated in a subsequent commit.
GitHub Actions runs in UTC where the timezone starts with a "+" instead
of our local dev machines (in PT or ET) which start with a "-" in
numeric form. So, we expand the regex to allow for those in
WebSocketRequestLogTest.
Along the way, we change from calling `matches` directly on the strings
to calling it on the `assertThat` to get better test output.
