Added a section for certificates on EIB (#725) (#1006)

Co-authored-by: Eduardo Mínguez <eduardo.minguez@suse.com>

Author: ranjinimn

asciidoc/quickstart/eib.adoc

@@ -173,6 +173,22 @@ operatingSystem:
 The values provided in this example are for illustrative purposes only. Please adjust them to fit your specific requirements.
 ====
 
+[#adding-certificates]
+=== Adding certificates
+
+Certificate files with the extension ".pem" or ".crt" stored in the `certificates` directory will be installed in the node system-wide certificate store:
+
+[,console]
+----
+.
+├── definition.yaml
+└── certificates
+    ├── my-ca.pem
+    └── my-ca.crt
+----
+
+See the https://documentation.suse.com/smart/security/html/tls-certificates/index.html#tls-adding-new-certificates["Securing Communication with TLS Certificate" guide] for more information.
+
 [#adding-operating-system-files]
 === Adding Operating System Files