Use license.widevine.com cert for provisioning server

Merge from Widevine repo of http://go/wvgerrit/44505

This CL changes the certificate provisioning code to verify the
provisioning message using a cert from license.widevine.com instead of
the staging certificate.

It also adjusts the certificates in config_test_env.cpp because the
license and provisioning servers are different and may probably have
different certs.

bug: 73031756
test: unit tests with mock oemcrypto, and read oemcrypto on sailfish
Change-Id: I4b457a369a49ef07bda9e5632ab59e5f621ec966

libwvdrmengine/cdm/core/test/http_socket.cpp

@@ -8,6 +8,7 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/socket.h>
 #include <unistd.h>
 
@@ -323,7 +324,7 @@ int HttpSocket::Read(char* data, int len, int timeout_in_ms) {
       // The connection has been closed.  No more data.
       break;
     } else {
-      LOGE("recv returned %d, errno = %d", read, errno);
+      LOGE("recv returned %d, errno = %d = %s", read, errno, strerror(errno));
       return -1;
     }
   }