Adding additionalTrustBundlePolicy

Author: snarayan-redhat

modules/installation-configure-proxy.adoc

@@ -207,6 +207,7 @@ additionalTrustBundle: | <4>
     -----BEGIN CERTIFICATE-----
     <MY_TRUSTED_CA_CERT>
     -----END CERTIFICATE-----
+additionalTrustBundlePolicy: <policy_to_add_additionalTrustBundle> <5>
 ----
 <1> A proxy URL to use for creating HTTP connections outside the cluster. The
 URL scheme must be `http`.
@@ -225,6 +226,7 @@ Operator then creates a `trusted-ca-bundle` config map that merges the contents
 with the {op-system} trust bundle. The `additionalTrustBundle` field is required unless
 the proxy's identity certificate is signed by an authority from the {op-system} trust
 bundle.
+<5> Optional: The policy to determine the configuration of the `Proxy` object to reference the `user-ca-bundle` config map in the `trustedCA` field. The allowed values are `Proxyonly` and `Always`. Use `Proxyonly` to reference the `user-ca-bundle` config map only when `http/https` proxy is configured. Use `Always` to always reference the `user-ca-bundle` config map. The default value is `Proxyonly`.
 +
 [NOTE]
 ====