Updated issuer types for cert-manager

Author: subhtk

modules/cert-manager-issuer-types.adoc

@@ -4,13 +4,35 @@
 
 :_mod-docs-content-type: CONCEPT
 [id="cert-manager-issuer-types_{context}"]
-= Supported issuer types
+= {cert-manager-operator} issuer providers
 
-The {cert-manager-operator} supports the following issuer types:
+The {cert-manager-operator} has been tested with the following issuer types:
 
 * Automated Certificate Management Environment (ACME)
-* Certificate authority (CA)
+* Certificate Authority (CA)
 * Self-signed
 * link:https://cert-manager.io/docs/configuration/vault/[Vault]
-* link:https://cert-manager.io/docs/configuration/venafi/[Venafi]
-* link:https://www.nokia.com/networks/security-portfolio/netguard/certificate-manager/[Nokia NetGuard Certificate Manager] (NCM)
+* link:https://www.nokia.com/networks/security-portfolio/netguard/certificate-manager/[Nokia NetGuard Certificate Manager] (NCM)
+* link:https://cloud.google.com/security/products/certificate-authority-service[Google cloud Certificate Authority Service] (Google CAS)
+
+[id="cert-manager-issuer-types-testing_{context}"]
+== Testing issuer types
+
+The following table outlines the test coverage for each tested issuer type:
+
+[cols="^30,^20,^50",options="header"]
+|===
+| Issuer Type                          | Test Status        | Notes
+
+| ACME                                 | Fully Tested       | Verified with standard ACME implementations.
+| CA                                 | Fully Tested       | Ensures basic CA functionality.
+| Self-signed                          | Fully Tested       | Ensures basic self-signed functionality.
+| Vault | Fully Tested   | Limited to standard Vault setups due to infrastructure access constraints.
+| NCM | Partially Tested   | Subject to provider-specific limitations.
+| Google CAS          | Partially Tested       | Compatible with common CA configurations.
+|===
+
+[NOTE]
+====
+{product-title} does not test all factors associated with third-party {cert-manager-operator} provider functionality. For more information about third-party support, see the link:https://access.redhat.com/third-party-software-support[{product-title} third-party support policy].
+====