Support provisioning 3.0

[ Merge of http://go/wvgerrit/29004 ]

Enable support for provisioning with OEM certificates as root of
trust.

b/62972441

Test: WV unit/intgration test and cdm_feature_test

Change-Id: I30576fc0bb68a873eeaaca03f6b9c89fa6a14327

libwvdrmengine/cdm/test/request_license_test.cpp

@@ -3999,7 +3999,7 @@ int main(int argc, char** argv) {
     g_service_certificate.assign(g_config->service_certificate());
   }
   if (g_license_server.empty()) {
-    g_license_server.assign(g_config->license_server());
+    g_license_server.assign(g_config->license_server_url());
   }
 
   // Displays server url, port and key Id being used