Oracle Linux 6.5 release notes indicate no OpenSSH package change from upstream, so use RHEL 6.5 HMACs.

foonix · foonix · commit ffc7faeeea01 · 2020-04-11T09:17:26.000-04:00
Signed-off-by: Jason McNew &lt;foonix@yahoo.com&gt;
diff --git a/tasks/crypto.yml b/tasks/crypto.yml
@@ -36,7 +36,7 @@
   set_fact:
     ssh_macs: '{{ ssh_macs_53_el_6_5_default }}'
   when:
-    - ansible_distribution in ['CentOS', 'RedHat']
+    - ansible_distribution in ['CentOS', 'OracleLinux', 'RedHat']
     - ansible_distribution_version is version('6.5', '>=')
     - not ssh_macs
 
