Allow ICSP resource creation

ocp_resources/image_content_source_policy.py

@@ -7,3 +7,27 @@ class ImageContentSourcePolicy(Resource):
     """
 
     api_group = Resource.ApiGroup.OPERATOR_OPENSHIFT_IO
+
+    def __init__(self, repository_digest_mirrors, **kwargs):
+        """
+        Create/Manage ICSP configuration object. API reference:
+        https://docs.openshift.com/container-platform/4.12/rest_api/operator_apis/imagecontentsourcepolicy-operator-openshift-io-v1alpha1.html
+
+        Args:
+            repository_digest_mirrors (list of dict):
+                e.g. [{source: <str>, mirrors: <list>}, ..., {source: <str>, mirrors: <list>}]
+            - source - the repository that users refer to, e.g. in image pull specifications
+            - mirrors - one or more repositories (str) that may also contain the same images. The order
+                of mirrors in this list is treated as the user’s desired priority
+        """
+        self.repository_digest_mirrors = repository_digest_mirrors
+        super().__init__(**kwargs)
+
+    def to_dict(self):
+        super().to_dict()
+        if not self.yaml_file:
+            if not self.repository_digest_mirrors:
+                raise ValueError("repository_digest_mirrors must be defined")
+            self.res["spec"] = {
+                "repositoryDigestMirrors": self.repository_digest_mirrors
+            }