kvlist: provide options for case sensitivity fetch #212

Job	Run time
CentOS 7 build to confirm no issues once used downstream	1m 1s
Build with various code analysis tools (clang-sanitize-address)	21s
Build with various code analysis tools (clang-sanitize-memory)	21s
Debian Buster build to confirm no issues once used downstream	27s
Build sources on MSYS2 for windows-latest	1m 27s
Build with various code analysis tools (clang-sanitize-undefined)	22s
Build sources on amd64 for ubuntu-latest - gcc	8s
Build sources on MSYS2 for windows-2019	1m 22s
Build with various code analysis tools (clang-sanitize-dataflow)	22s
Build sources on amd64 for ubuntu-latest - clang	7s
Build sources on arm64 for ubuntu-latest - gcc	5m 16s
Build with various code analysis tools (clang-sanitize-safe-stack)	21s
Build sources on arm64 for ubuntu-latest - clang	5m 9s
Build with various code analysis tools (valgrind)	18s
Build sources on amd64 for windows-latest	13s
Build sources on amd64 for macos-latest - gcc	12s
Build sources on amd64 for windows-2019	59s
Build sources on amd64 for macos-latest - clang	11s
Required checks complete	2s
	18m 39s

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