Add EC-DSA, custom certificate common names for DTLS #2135

Job	Run time
lint	1m 44s
test_wincrypto (windows-latest, stable)	6m 23s
test (ubuntu-latest, stable)	6m 16s
test_wincrypto (windows-latest, beta)	6m 22s
cargo-deny (aarch64-apple-ios)	22s
test (ubuntu-latest, beta)	6m 6s
test_wincrypto (windows-latest, 1.71.1)	7m 24s
cargo-deny (aarch64-linux-android)	21s
test (ubuntu-latest, 1.71.1)	7m 3s
cargo-deny (i686-pc-windows-gnu)	21s
test (macos-latest, stable)	4m 58s
cargo-deny (i686-pc-windows-msvc)	21s
test (macos-latest, beta)	5m 39s
cargo-deny (i686-unknown-linux-gnu)	19s
test (macos-latest, 1.71.1)	5m 47s
cargo-deny (wasm32-unknown-unknown)	21s
test (windows-latest, stable)	13m 13s
cargo-deny (x86_64-apple-darwin)	18s
test (windows-latest, beta)	12m 27s
cargo-deny (x86_64-apple-ios)	23s
test (windows-latest, 1.71.1)	13m 0s
cargo-deny (x86_64-pc-windows-gnu)	20s
cargo-deny (x86_64-pc-windows-msvc)	21s
cargo-deny (x86_64-unknown-linux-gnu)	21s
cargo-deny (x86_64-unknown-redox)	21s
	1h 40m 31s

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