credential-cache: respect request capabilities #22088

Job	Run time
config	5s
fuzz smoke test	37s
win+VS build	0s
debian-11 (debian:11)	4m 32s
linux32 (i386/ubuntu:focal)	4m 31s
almalinux-8 (almalinux:8)	4m 31s
linux-musl (alpine)	4m 31s
pedantic (fedora)	1m 41s
documentation	4m 43s
linux-asan-ubsan (ubuntu-latest)	4m 42s
linux-gcc (ubuntu-20.04)	4m 43s
linux-gcc-default (ubuntu-latest)	4m 31s
linux-leaks (ubuntu-latest)	4m 40s
linux-reftable (ubuntu-latest)	4m 41s
linux-reftable-leaks (ubuntu-latest)	4m 42s
linux-sha256 (ubuntu-latest)	4m 42s
linux-TEST-vars (ubuntu-20.04)	4m 42s
osx-clang (macos-13)	5m 3s
osx-gcc (macos-13)	5m 3s
osx-reftable (macos-13)	4m 49s
sparse	2m 56s
static-analysis	3m 46s
win build	3m 58s
win+VS test	0s
win test	0s
	1h 28m 9s

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