Helm charts dir commenting causes / dir copying

HELM_CHARTS_DIR in package.conf is unnecessarily mandatory.
When commenting out this variable, packaging script copies
machine's root directory content into package.

This commit will make HELM_CHARTS_DIR optional and its
existence is checked in package.sh script.

Issue-ID: OOM-1626

Change-Id: I7b5d135ab130a28491e7223b66f26b50ccce5fca
Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>
diff --git a/build/package.sh b/build/package.sh
index 0e4f121..fd9b9e7 100755
--- a/build/package.sh
+++ b/build/package.sh
@@ -105,10 +105,13 @@
     done
 
     # Helm charts handling
-    echo "Helm charts handling"
-    # Copy charts available for ansible playbook to use/move them to target server/dir
-    mkdir -p "${pkg_root}"/ansible/application/helm_charts
-    cp -r "${HELM_CHARTS_DIR}"/* "${pkg_root}"/ansible/application/helm_charts
+    if [ ! -z "${HELM_CHARTS_DIR}" ];
+    then
+        echo "Helm charts handling"
+        # Copy charts available for ansible playbook to use/move them to target server/dir
+        mkdir -p "${pkg_root}"/ansible/application/helm_charts
+        cp -r "${HELM_CHARTS_DIR}"/* "${pkg_root}"/ansible/application/helm_charts
+    fi
 
     # Add metadata to the package
     add_metadata "${pkg_root}"/package.info