* Allow updating of ec2_group rules with EC2 classic ELB targets
Fix regression introduced in #45296 with EC2 Classic SGs
Fixes: #57247
Also add (unsupported) ec2 classic test suite with test case for this scenario
* move ec2 classic tests to conditional within ec2_group target
* clean up ec2_classic tests
* ec2_classic account can't run most ec2_group tests
