Step addition: Pre-create CCM feature gate during cluster install

ci-operator/step-registry/ccm/conf/pre-create-feature-gate/OWNERS

@@ -0,0 +1,14 @@
+approvers:
+- danil-grigorev
+- elmiko
+- fedosin
+- joelspeed
+- mandre
+- mdbooth
+reviewers:
+- danil-grigorev
+- elmiko
+- fedosin
+- joelspeed
+- mandre
+- mdbooth

ci-operator/step-registry/ccm/conf/pre-create-feature-gate/ccm-conf-pre-create-feature-gate-commands.sh

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+#!/bin/bash
+set -euo pipefail
+
+cat <<EOF > ${SHARED_DIR}/manifest_feature_gate.yaml
+---
+apiVersion: config.openshift.io/v1
+kind: FeatureGate
+metadata:
+  annotations:
+    include.release.openshift.io/self-managed-high-availability: "true"
+    include.release.openshift.io/single-node-developer: "true"
+    release.openshift.io/create-only: "true"
+  name: cluster
+spec:
+  customNoUpgrade:
+    enabled:
+    - ExternalCloudProvider
+    - CSIMigrationAWS
+    - CSIMigrationOpenStack
+  featureSet: CustomNoUpgrade
+EOF

ci-operator/step-registry/ccm/conf/pre-create-feature-gate/ccm-conf-pre-create-feature-gate-ref.metadata.json

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+{
+	"path": "ccm/conf/pre-create-feature-gate/ccm-conf-pre-create-feature-gate-ref.yaml",
+	"owners": {
+		"approvers": [
+			"danil-grigorev",
+			"elmiko",
+			"fedosin",
+			"joelspeed",
+			"mandre",
+			"mdbooth"
+		],
+		"reviewers": [
+			"danil-grigorev",
+			"elmiko",
+			"fedosin",
+			"joelspeed",
+			"mandre",
+			"mdbooth"
+		]
+	}
+}

ci-operator/step-registry/ccm/conf/pre-create-feature-gate/ccm-conf-pre-create-feature-gate-ref.yaml

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+ref:
+  as: ccm-conf-pre-create-feature-gate
+  commands: ccm-conf-pre-create-feature-gate-commands.sh
+  from: cli
+  resources:
+    requests:
+      cpu: 10m
+      memory: 100Mi
+  documentation: |-
+    Apply custom featureGate configuration to cluster to enable CCM + CSI functionality