PG10 postgis24 + gdal on RHEL6

Just wanted to point out that the GDAL package seems to be unavailable for PG10
for (at least) centos6.

Deploying a new customer, our ansible deployment script is failing like so:

TASK: [redhat_pgsql | Install postgresql-server] ******************************
failed: [new.gta] => {"changed": true, "cmd": ["yum", "-y", "install", "postgresql10-server", "postgresql10-docs", "postgresql10-contrib", "pgfincore10", "pg_repack10", "pgtune", "proj-nad", "libpqxx", "libpqxx-devel", "postgis24_10", "postgis24_10-client", "postgis24_10-docs", "postgis24_10-utils"], "delta": "0:00:13.078998", "end": "2017-11-29 19:55:36.754333", "item": "", "rc": 1, "start": "2017-11-29 19:55:23.675335"}

stderr: Error: Package: postgis24_10-2.4.2-1.rhel6.x86_64 (pgdg10)
Requires: gdal-libs >= 1.9.0

Thanks,
Justin