Longhorn: Upgrade from 1.8.1 to 1.9.0

Change-Id: I809890d3f73e85119c5f3d97e53856bd371c8c81
diff --git a/charts/longhorn-1.8.1/.helmignore b/charts/longhorn-1.8.1/.helmignore
new file mode 100644
index 0000000..f0c1319
--- /dev/null
+++ b/charts/longhorn-1.8.1/.helmignore
@@ -0,0 +1,21 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj