CreateImageWizard: RHEL 9

Expose rhel-90, it has reached GA.

src/Utilities/isRhel.js

@@ -0,0 +1,16 @@
+import {
+    RHEL_8,
+    RHEL_9,
+} from '../constants';
+
+function isRhel(distro) {
+    switch (distro) {
+        case RHEL_8:
+        case RHEL_9:
+            return true;
+        default:
+            return false;
+    }
+}
+
+export default isRhel;