anchor.diff:  `insecure`: Insecure indicates whether the registry is secure or insecure.
   By default, if not otherwise specified, the registry is assumed to be secure.
   
  -|`RegistrySources`
  +|`additionalTrustedCA`
  +|`additionalTrustedCA`: A reference to a ConfigMap containing additional CAs that
  +should be trusted during `ImageStream import`, `pod image pull`,
  +`openshift-image-registry pullthrough`, and builds.
  +
  +The namespace for this ConfigMap is `openshift-config`. The format of the
  +ConfigMap is to use the registry hostname as the key, and the PEM-encoded
  +certificate as the value, for each additional registry CA to trust.
  +
  +|`registrySources`
  +|`registrySources`: Contains configuration that determines how the container
  +runtime should treat individual registries when accessing images for builds and
  +pods. For instance, whether or not to allow insecure access. It does not contain
  +configuration for the internal cluster registry.
  +
  +|`externalRegistryHostnames`
  +|`externalRegistryHostnames`: Provides the hostnames for the default external
  +image registry. The external hostname should be set only when the image registry
  +is exposed externally. The first value is used in `publicDockerImageRepository`
  +field in ImageStreams. The value must be in `hostname[:port]` format.
  +
  +|`registrySources`
   |Holds cluster-wide information about how to handle the registries config.
   
   `insecureRegistries`: Registries which do not have a valid TLS certificate or
  
positive.code: from the API are not affected by this policy. Typically only cluster
  administrators will have the appropriate permissions.
  
  `additionalTrustedCA`: A reference to a ConfigMap containing additional CAs that
  should be trusted during `ImageStream import`, `pod image pull`,
  `openshift-image-registry pullthrough`, and builds.
  
  The namespace for this ConfigMap is `openshift-config`. The format of the
  ConfigMap is to use the registry hostname as the key, and the PEM-encoded
  certificate as the value, for each additional registry CA to trust.
  
  `registrySources`: Contains configuration that determines how the container
  runtime should treat individual registries when accessing images for builds and
  pods. For instance, whether or not to allow insecure access. It does not contain
  configuration for the internal cluster registry.
  
  |`ImageStatus`
  |`internalRegistryHostname`: Set by the Image Registry Operator, which controls
  the `internalRegistryHostname`. It sets the hostname for the default internal
  image registry. The value must be in `hostname[:port]` format. For backward
  compatibility, you can still use the `OPENSHIFT_DEFAULT_REGISTRY` environment
  variable, but this setting overrides the environment variable.
  
  `externalRegistryHostnames`: Provides the hostnames for the default external
  image registry. The external hostname should be set only when the image registry
  is exposed externally. The first value is used in `publicDockerImageRepository`
  field in ImageStreams. The value must be in `hostname[:port]` format.
  
  |`RegistryLocation`
  |Contains a location of the registry specified by the registry domain name.
  The domain name might include wildcards.
  
  `domainName`: Specifies a domain name for the registry. In case the registry uses a
  non-standard (80 or 443) port, the port should be included in the domain name
  
negative.code: ====
  When the `allowedRegistries` parameter is defined, all registries including `registry.redhat.io` and `quay.io` are blocked unless explicitly listed. If using the parameter, declare source registries `registry.redhat.io` and `quay.io` as required by payload images within your environment, to prevent Pod failure. For disconnected clusters, mirror registries should also be added.
  ====
  
  The `status` field of the `image.config.openshift.io/cluster` resource holds
  observed values from the cluster.
  
  [cols="3a,8a",options="header"]
  |===
  |Parameter |Description
  
  |`internalRegistryHostname`
  |`internalRegistryHostname`: Set by the Image Registry Operator, which controls
  the `internalRegistryHostname`. It sets the hostname for the default internal
  image registry. The value must be in `hostname[:port]` format. For backward
  compatibility, you can still use the `OPENSHIFT_DEFAULT_REGISTRY` environment
  variable, but this setting overrides the environment variable.
  
  |`externalRegistryHostnames`
  |`externalRegistryHostnames`: Set by the Image Registry Operator, provides the
  external hostnames for the image registry when it is exposed externally. The
  first value is used in `publicDockerImageRepository` field in ImageStreams. The
  values must be in `hostname[:port]` format.
  
  |===
  