Enable IETF QUIC for more gfe/gfe2/e2e tests. Also let quic_spdy_client process MAX_STREAMS if it cannot open new streams.
gfe-relnote: n/a (test only)
PiperOrigin-RevId: 303384725
Change-Id: Iff726ab1a55de0a521e287434bfbae2b3548cc8b
QUICHE (QUIC, Http/2, Etc) is Google‘s implementation of QUIC and related protocols. It powers Chromium as well as Google’s QUIC servers and some other projects.