Handle tls and dtls server version selection similarly #80

Job	Run time
check-ansi	2m 39s
basic_clang	5m 6s
basic_gcc	4m 58s
check_docs	56s
check_update	1m 10s
minimal	2m 24s
address_ub_sanitizer	9m 30s
memory_sanitizer	18m 39s
no-deprecated	4m 47s
non-caching	13m 29s
no-shared (ubuntu-latest)	3m 36s
no-shared (macos-latest)	6m 17s
threads_sanitizer	5m 7s
enable_brotli_and_asan_ubsan	8m 28s
enable_brotli_and_zstd_dynamic	4m 45s
enable_brotli_dynamic	4m 50s
enable_non-default_options	4m 12s
enable_zstd_and_asan_ubsan	8m 37s
enable_zstd_dynamic	4m 44s
fips_and_ktls	5m 4s
buildtest	6m 16s
enable-tfo (ubuntu-latest)	4m 37s
external-test-cf-quiche	3m 59s
enable-tfo (macos-latest)	8m 19s
external-test-pyca (1.51.0, 3.9)	5m 42s
no-legacy	4m 53s
external-tests	10m 52s
legacy	3m 40s
out-of-source-and-install (ubuntu-latest)	6m 47s
out-of-source-and-install (macos-latest)	17m 9s
	3h 11m 32s

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