Add missing quote, added func banner()

Change-Id: I7d9f0df308ce858ed659bffa8ce985cfdc8f1c10
diff --git a/vars/dotkube.groovy b/vars/dotkube.groovy
index 97b82c2..e451f42 100644
--- a/vars/dotkube.groovy
+++ b/vars/dotkube.groovy
@@ -63,7 +63,7 @@
         {
             sh("""/bin/ls -ld ~/.kube """)
             sh("""find ~/.kube -print0 \
-                      | grep --null --null-data -e 'cache -e 'temp' \
+                      | grep --null --null-data -e 'cache' -e 'temp' \
                       | xargs -0 /bin/ls -ld""")
             // if (config['do-something']) {}
         }