Add some test brainpool certificates

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7442)

(cherry picked from commit 83c81eebed52aa84b6b34d26e984c859158ca1c0)

test/certs/server-ecdsa-brainpoolP256r1-cert.pem

+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

test/certs/server-ecdsa-brainpoolP256r1-key.pem

+-----BEGIN PRIVATE KEY-----
+MIGIAgEAMBQGByqGSM49AgEGCSskAwMCCAEBBwRtMGsCAQEEIKZSRhbD6lGhKbIm
+5JVgxnN8MHGB0whroUsSf0zmsAz+oUQDQgAETYDLIgpvvoxSBJxB5apcNrTZ0vYp
+VyG18hDEOplqkylnW7kekN9a83WtIwPRoSwhczgFg/MhvLZ/BHQJW2SU3g==
+-----END PRIVATE KEY-----

test/certs/setup.sh

@@ -365,3 +365,7 @@ REQMASK=MASK:0x800 ./mkcert.sh req badalt7-key "O = Bad NC Test Certificate 7" \
 # SHA256
 ./mkcert.sh genee PSS-SHA256 ee-key ee-pss-sha256-cert ca-key ca-cert \
     -sha256 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:digest
+
+OPENSSL_KEYALG=ec OPENSSL_KEYBITS=brainpoolP256r1 ./mkcert.sh genee \
+    "Server ECDSA brainpoolP256r1 cert" server-ecdsa-brainpoolP256r1-key \
+    server-ecdsa-brainpoolP256r1-cert rootkey rootcert