[release-branch.go1.17] net/http: update bundled golang.org/x/net/http2

Pull in approved backports to golang.org/x/net/http2:

	95aca89 set ContentLength to -1 for HEAD response with no Content-Length
	bd5b1b8 set Response.ContentLength to 0 when headers end stream
	27001ec don't abort half-closed streams on server connection close
	f0a8156 on write errors, close ClientConn before returning from RoundTrip
	9a182eb deflake TestTransportReqBodyAfterResponse_200
	821db7b close the Request's Body when aborting a stream
	028e125 return unexpected eof on empty response with non-zero content length
	5388f2f don't rely on system TCP buffer sizes in TestServer_MaxQueuedControlFrames
	fc298ce detect write-blocked PING frames
	e96ad84 avoid race in TestTransportReqBodyAfterResponse_403.
	7f15435 avoid clientConnPool panic when NewClientConn fails
	9572bae avoid extra GetConn trace call
	b04064c refactor request write flow
	7e165c9 remove PingTimeout from TestTransportPingWhenReading
	ef976fc fix Transport connection pool TOCTOU max concurrent stream bug
	1d9597c shut down idle Transport connections after protocol errors
	c173d09 remove check for read-after-close of request bodies
	466a463 fix race in DATA frame padding refund
	4028c5f avoid blocking while holding ClientConn.mu
	b91f72d fix off-by-one error in client check for max concurrent streams
	21e6c63 close request body after early RoundTrip failures
	e79adf9 limit client initial MAX_CONCURRENT_STREAMS
	c0c2bc5 make Transport not reuse conns after a stream protocol error
	14c0235 accept zero-length block fragments in HEADERS frames
	0d2c43c close the request body if needed
	5627bb0 reduce frameScratchBuffer caching aggressiveness
	c9f4fb0 also set "http/1.1" ALPN in ConfigureServer

By doing:

	$ go get -d golang.org/x/[email protected]
	go get: upgraded golang.org/x/net v0.0.0-20210901185426-6d2eada6345e => v0.0.0-20211101194204-95aca89e93de
	$ go mod tidy
	$ go mod vendor
	$ go generate -run=bundle std

Fixes #49077.
Fixes #48823.
Fixes #48650.

Change-Id: Idb972ba5313080626b60b4111d52b80197364ff4
Reviewed-on: https://go-review.googlesource.com/c/go/+/359776
Trust: Dmitri Shuralyov <[email protected]>
Run-TryBot: Dmitri Shuralyov <[email protected]>
Reviewed-by: Damien Neil <[email protected]>
TryBot-Result: Go Bot <[email protected]>

Author: dmitshur

src/go.mod

@@ -4,7 +4,7 @@ go 1.17
 
 require (
 	golang.org/x/crypto v0.0.0-20210503195802-e9a32991a82e
-	golang.org/x/net v0.0.0-20210901185426-6d2eada6345e
+	golang.org/x/net v0.0.0-20211101194204-95aca89e93de
 )
 
 require (

src/go.sum

@@ -1,8 +1,8 @@
 golang.org/x/crypto v0.0.0-20210503195802-e9a32991a82e h1:8foAy0aoO5GkqCvAEJ4VC4P3zksTg4X4aJCDpZzmgQI=
 golang.org/x/crypto v0.0.0-20210503195802-e9a32991a82e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210901185426-6d2eada6345e h1:50pLUXxddAhYigPZvsrMVrd+113EKnh8VVRKuSaRviw=
-golang.org/x/net v0.0.0-20210901185426-6d2eada6345e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211101194204-95aca89e93de h1:dKoXPECQZ51dGVSkuiD9YzeNpLT4UPUY4d3xo0sWrkU=
+golang.org/x/net v0.0.0-20211101194204-95aca89e93de/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210511113859-b0526f3d8744 h1:yhBbb4IRs2HS9PPlAg6DMC6mUOKexJBNsLf4Z+6En1Q=