add keyType to CreateCertOptions and optionally support creating RSA private keys

Summary: CertUtil::createCert by default creates an EC private key. Let's extend this to optionally create RSA private keys as well. Other supported key types remain unimplemented for now.

Reviewed By: mingtaoy

Differential Revision: D91269144

fbshipit-source-id: b566a0e2712ab715c7aea2442b38f52d816f724d

Author: Yang Wang

proxygen/lib/transport/test/PersistentFizzPskCacheTest.cpp

@@ -24,10 +24,10 @@ class PersistentFizzPskCacheTest : public Test {
     createCache();
 
     std::shared_ptr<fizz::PeerCert> serverCert = fizz::test::getPeerCert(
-        fizz::test::createCert("server", false, nullptr));
+        fizz::test::createCert("server", false, nullptr, fizz::KeyType::P256));
 
     std::shared_ptr<fizz::PeerCert> clientCert = fizz::test::getPeerCert(
-        fizz::test::createCert("client", false, nullptr));
+        fizz::test::createCert("client", false, nullptr, fizz::KeyType::P256));
 
     psk1_.psk = "PSK1";
     psk1_.secret = "secret1";

proxygen/lib/transport/test/PersistentQuicPskCacheTest.cpp

@@ -25,10 +25,10 @@ class PersistentQuicPskCacheTest : public Test {
     createCache();
 
     std::shared_ptr<fizz::PeerCert> serverCert = fizz::test::getPeerCert(
-        fizz::test::createCert("server", false, nullptr));
+        fizz::test::createCert("server", false, nullptr, fizz::KeyType::P256));
 
     std::shared_ptr<fizz::PeerCert> clientCert = fizz::test::getPeerCert(
-        fizz::test::createCert("client", false, nullptr));
+        fizz::test::createCert("client", false, nullptr, fizz::KeyType::P256));
 
     auto& fizzPsk1 = quicPsk1_.cachedPsk;
     fizzPsk1.psk = "PSK1";