net/http: http2 transport doesn't respect all http1 Transport fields

[bradfitz]

The http.Transport by default creates a hidden http2.Transport which is supposed to use the settings from the public http.Transport. But the DisableKeepAlive setting isn't propagated.

[bradfitz]

Also DisableCompression and ResponseHeaderTimeout.

Looking at the fields on https://golang.org/pkg/net/http/#Transport ...

Proxy: not applicable (net/http does proxy)
Dial: not applicable (net/http dials and uses it, then passes conn)
DialTLS: same
TLSClientConfig: same
TLSHandshakeTimeout: same
DisableKeepAlives: missing
DisableCompression: missing
MaxIdleConnsPerHost: not applicable; this will be approximately 1 always, or maybe 2 during graceful server shutdown, then promptly 1 again.
ResponseHeaderTimeout: missing

[gopherbot]

CL https://golang.org/cl/18721 mentions this issue.