Add BouncyCastle as SecurityProvider which should allow handshake completion using RA test runner.

Author: pfg666

src/main/java/se/uu/it/dtlsfuzzer/MainRA.java

@@ -1,10 +1,12 @@
 package se.uu.it.dtlsfuzzer;
 
 import com.github.protocolfuzzing.protocolstatefuzzer.entrypoints.CommandLineParser;
+import de.rub.nds.tlsattacker.core.util.ProviderUtil;
 
 public class MainRA {
 
     public static void main(String[] args) {
+        ProviderUtil.addBouncyCastleProvider();
         MultiBuilderRA mb = new MultiBuilderRA();
         String[] parentLoggers = { Main.class.getPackageName() };