[CMPV2] Add a template for Certificate (cert-manager)

This commit introduces a template for requesting a cert-manager certificate.
See: https://cert-manager.io.
It consist of the following parts:
  - a template for creating certificate in commons component
  - a definition of a certifcate object in sdnc component

Issue-ID: OOM-2568
Signed-off-by: Jan Malkiewicz <jan.malkiewicz@nokia.com>
Change-Id: If58b8f12eff075d058db5a0fee3b2db5c2c93a17
diff --git a/kubernetes/contrib/.gitignore b/kubernetes/contrib/.gitignore
new file mode 100644
index 0000000..7020381
--- /dev/null
+++ b/kubernetes/contrib/.gitignore
@@ -0,0 +1 @@
+components/dist