Fix AH media Checksum link and update Cloud-base AMIs
* First F29 Atomic Host Two Week release was done
from compose directory /compose/twoweek/ instead of
compose/updates/. Adjusted Checksum links accordingly
* Fedmsg for Fedora 29 Cloud-base AMIs for us-east-2
and eu-west-3 regions were missing and hence added
manually AMI IDs
Signed-off-by: Sinny Kumari <sinny@redhat.com>