contrib/jenkins.sh: print pylint version before running it

Change-Id: Icc96ff16af482581dc97a387bcff1374fbb620f3
Related: OS#6034
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 34f47ea..0309877 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -31,6 +31,8 @@
 	../tests/pysim-test.sh
 	;;
 "pylint")
+	# Print pylint version
+	pip3 freeze | grep pylint
 	# Run pylint to find potential errors
 	# Ignore E1102: not-callable
 	#   pySim/filesystem.py: E1102: method is not callable (not-callable)