Merge bitcoin#2519: [RPC] Do not register DMN-related RPC commands

82e49a1 [RPC] Do not register DMN-related RPC commands (random-zebra)

Pull request description:

  These commands cannot be used before v6.0 NU.
  Their name (and category) is likely going to change (see issue bitcoin#2385) before v6.0 release.
  So, it is better to just disable them for now (for release 5.3).

  I kept the registration on RegTest, so we can keep running the functional tests.

ACKs for top commit:
  furszy:
    utACK 82e49a1
  Fuzzbawls:
    ACK 82e49a1

Tree-SHA512: ae4bec07cce16fbf0eae876e32a13887a5146cb5be2b6d400734dc1e165437d73e3a3aa8ac6066583a6704027850fe04036cdd370689ac7dd670b6043a0c1cc6

Author: Fuzzbawls

src/rpc/rpcevo.cpp

@@ -993,6 +993,11 @@ static const CRPCCommand commands[] =
 
 void RegisterEvoRPCCommands(CRPCTable &tableRPC)
 {
+    if (!Params().IsRegTestNet()) {
+        // Disabled before PIVX v6.0
+        return;
+    }
+
     for (unsigned int vcidx = 0; vcidx < ARRAYLEN(commands); vcidx++) {
         tableRPC.appendCommand(commands[vcidx].name, &commands[vcidx]);
     }