You can grab the image download links and fill out the results here:
https://fedoraproject.org/wiki/Test_Results:Fedora_27_RC_1.2_Cloud
Unfortunately only half the AMIs uploaded:
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (us-east-1) ami-acaa02d6
paravirtual gp2
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (us-east-1) ami-00ac047a
paravirtual standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (us-west-2) ami-38b07b40 hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (us-west-1) ami-69586709 hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (sa-east-1) ami-68cfb704 hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (eu-west-1) ami-f564c58c hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (eu-central-1) ami-a067e2cf hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (ap-southeast-2) ami-6df41a0f hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (ap-southeast-1) ami-04612c67 hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (ap-northeast-1) ami-da963abc hvm
standard
Fedora-Cloud-Base-27-1.2.x86_64 EC2 (us-east-1) ami-a9a800d3 hvm
standard
I've opened a ticket to get this resolved:
https://pagure.io/releng/issue/7126