No 'helm dep update' on SEBA charts that include kafka

Change-Id: I919e821005a835352e932bcbd9a9ad8326aaa319
diff --git a/jjb/shell/helmlint.sh b/jjb/shell/helmlint.sh
index c0ac0f4..2e8c923 100755
--- a/jjb/shell/helmlint.sh
+++ b/jjb/shell/helmlint.sh
@@ -34,7 +34,11 @@
   chartdir=$(dirname "${chart}")
 
   # update requirements if it exists. Skip voltha as it has non-clean reqirements
-  if [[ ! $chartdir =~ voltha$ ]] && [ -f "${chartdir}/requirements.yaml" ]; then
+  if [[ ! $chartdir =~ voltha$ ]] && \
+     [[ ! $chartdir =~ nem-core$ ]] && \
+     [[ ! $chartdir =~ seba-substrate$ ]] && \
+     [ -f "${chartdir}/requirements.yaml" ]
+  then
     helm dependency update "${chartdir}"
   fi