Allow max 2 bots in a match

Author: episarenko

server/src/main/java/ru/croccode/hypernull/server/HyperNull.java

@@ -30,9 +30,9 @@
 public class HyperNull implements Runnable, Closeable {
 
 	private static final int MIN_FRIENDLY_BOTS = 1;
-	private static final int MAX_FRIENDLY_BOTS = 4;
+	private static final int MAX_FRIENDLY_BOTS = 2;
 	private static final int MIN_DEATHMATCH_BOTS = 2;
-	private static final int MAX_DEATHMATCH_BOTS = 4;
+	private static final int MAX_DEATHMATCH_BOTS = 2;
 
 	private final MapRegistry mapRegistry;