CI simexec: print stdout from java run, which includes the Cooja log …

…and possible JVM error logs

regression-tests/simexec.sh

@@ -55,13 +55,13 @@ while (( "$#" )); do
 
 	#Verbose output when using CI
 	if [ "$CI" = "true" ]; then
-		echo "==== COOJA.log ====" ; cat COOJA.log;
+		echo "==== $BASENAME.log ====" ; cat $BASENAME.log;
 		echo "==== COOJA.testlog ====" ; cat COOJA.testlog;
 		echo "==== Files used for simulation (sha1sum) ===="
 		grep "Loading firmware from:" COOJA.log | cut -d " " -f 10 | uniq  | xargs -r sha1sum
 		grep "Creating core communicator between Java class" COOJA.log | cut -d " " -f 17 | uniq  | xargs -r sha1sum
 	else
-		tail -50 COOJA.log ;
+		tail -50 $BASENAME.log ;
 	fi;
 
 	mv COOJA.testlog $BASENAME.$RANDOMSEED.faillog