fix pylint module to 1.x version as 2.x is astroid 2.x only

Change-Id: I84de129ebb61ffce1bda9e06b2702e1c3def62f7
diff --git a/packer/provision/basebuild.sh b/packer/provision/basebuild.sh
index 4c0084e..5388459 100644
--- a/packer/provision/basebuild.sh
+++ b/packer/provision/basebuild.sh
@@ -90,7 +90,7 @@
         isort \
         linkchecker \
         pexpect \
-        pylint \
+        pylint==1.* \
         pyyaml \
         robotframework \
         robotframework-httplibrary \