fix(gemini oracle db ami): ami id from wrong region
fix(gemini oracle db ami): ami id from wrong region

gemini job automatically run on us-east-1 region.
oracle_ami_id is set with ami from eu-west-1.

scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-longevity-tests