Tests/RHEL-9.0: add EC2 and EC2 HA image tests

Because the RHUI client RPMs for RHEL-9 don't exist yet, these test
cases use the RHUI client RPMs for RHEL-8 to satisfy the required
package set. These RPMs contain the entitlement certificate and repo
definitions for RHEL-8 AWS RHUI repos, but RHUI will not work without
the image being imported with the proper Billing Code to AWS. So these
installed RHUI RPMs are technically useless on the RHEL-9 image, but
this approach is good enough to allow us to at least build and test
these images from configuration point of view.

Regenerate all image test cases because of the updated repositories.

Signed-off-by: Tomas Hozza <thozza@redhat.com>

tools/test-case-generators/distro-arch-imagetype-map.json

@@ -113,6 +113,8 @@
     "rhel-90": {
         "x86_64": [
             "ami",
+            "ec2",
+            "ec2-ha",
             "edge-commit",
             "edge-container",
             "openstack",
@@ -123,6 +125,7 @@
         ],
         "aarch64": [
             "ami",
+            "ec2",
             "edge-commit",
             "edge-container",
             "openstack",