Added helmignore

external/nifi/.helmignore

@@ -0,0 +1,29 @@
+# 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
+
+.circleci/
+
+doc/
+.github