cert-manager: 1.20.3 -> 1.21.0

Change-Id: I50161b8cfd621c1b07de87358fe8c14d1b14f711
diff --git a/charts/cert-manager/.helmignore b/charts/cert-manager/.helmignore
new file mode 100644
index 0000000..2d561ac
--- /dev/null
+++ b/charts/cert-manager/.helmignore
@@ -0,0 +1,26 @@
+# 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
+
+README.template.md
+OWNERS
+cert-manager*.tgz
+tests/