dcerpc: accept ALTER_CONTEXT as a valid request #7157

Job	Run time
Prepare dependencies	1m 2s
Prepare dependencies	1m 5s
Prepare cbindgen	58s
Prepare cbindgen	19s
Fedora 38 (gcc, debug, asan, wshadow, rust-strict)	8m 19s
Fedora 38 (gcc, debug, asan, wshadow, rust-strict)	8m 5s
Fedora 37 (clang, debug, asan, wshadow, rust-strict, systemd)	2m 53s
Fedora 37 (clang, debug, asan, wshadow, rust-strict, systemd)	6m 49s
Fedora 38 (clang, debug, asan, wshadow, rust-strict, systemd)	5m 52s
Fedora 38 (clang, debug, asan, wshadow, rust-strict, systemd)	9m 33s
AlmaLinux 9	4m 18s
AlmaLinux 9	13m 30s
AlmaLinux 8	8m 2s
AlmaLinux 8	13m 13s
Debian 10	3m 26s
Debian 10	8m 24s
Fedora 36 (debug, clang, asan, wshadow, rust-strict)	3m 17s
Fedora 36 (debug, clang, asan, wshadow, rust-strict)	9m 32s
Fedora 37 (gcc, debug, asan, wshadow, rust-strict)	2m 18s
Fedora 37 (gcc, debug, asan, wshadow, rust-strict)	9m 41s
Ubuntu 20.04 (no nss, no nspr)	5s
Ubuntu 20.04 (no nss, no nspr)	7m 39s
Ubuntu 20.04 (-DNDEBUG)	1s
Ubuntu 20.04 (-DNDEBUG)	9m 27s
Ubuntu 22.04 (Cocci)	11m 4s
Ubuntu 22.04 (Cocci)	40m 55s
Ubuntu 22.04 (Debug Validation)	5m 4s
Ubuntu 22.04 (Debug Validation)	7m 26s
Ubuntu 22.04 (Fuzz)	1s
Ubuntu 22.04 (Fuzz)	7m 38s
MacOS Latest	1s
MacOS Latest	16m 56s
Windows MSYS2 MINGW64 (libpcap)	1s
Windows MSYS2 MINGW64 (libpcap)	34m 19s
Windows MSYS2 MINGW64 (NPcap)	1s
Windows MSYS2 MINGW64 (NPcap)	27m 6s
Windows MSYS2 MINGW64 (WinDivert)	1s
Windows MSYS2 MINGW64 (WinDivert)	19m 52s
Ubuntu 20.04 (MSRV)	1s
Ubuntu 20.04 (MSRV)	5m 56s
CentOS 7	1s
CentOS 7	12m 57s
Ubuntu 20.04 (unsupported rust)	1s
Ubuntu 20.04 (unsupported rust)	1m 47s
	5h 28m 56s

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