Update helm to 2.14.2, which helps pass lint on newer patchsets

Update shell scripts to pass newer shellcheck

Change-Id: I19f614368a51c338a01cc1f98f874cf2df4e8b06
diff --git a/kubespray-installer/setup.sh b/kubespray-installer/setup.sh
index f0ce669..4f5be0a 100755
--- a/kubespray-installer/setup.sh
+++ b/kubespray-installer/setup.sh
@@ -101,7 +101,7 @@
       echo "Missing option: podname" >&2
       echo " "
       display_help
-      exit -1
+      exit 1
     fi
 }
 
@@ -166,7 +166,7 @@
         echo Error: Unknown option: "$CLI_OPT" >&2
         echo " "
         display_help
-        exit -1
+        exit 1
         ;;
   esac
 done