[CORD-3003] Make XOS GUI optional (enabled by default)

Change-Id: I2b70ac628d7b5bf105de68895bb6cb0a22f93492
diff --git a/xos-gui/.helmignore b/xos-gui/.helmignore
new file mode 100644
index 0000000..f0c1319
--- /dev/null
+++ b/xos-gui/.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