[stable-2.8] hostname - fix Oracle Linux (#58510)

(cherry picked from commit 1a5ae366f4)

Co-authored-by: Sam Doran <sdoran@redhat.com>

changelogs/fragments/hostname-oracle-linux-regeression.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - hostname - fix regression with Oracle Linux (https://github.com/ansible/ansible/issues/42726)

lib/ansible/modules/system/hostname.py

@@ -639,7 +639,7 @@ class ScientificHostname(Hostname):
 
 class OracleLinuxHostname(Hostname):
     platform = 'Linux'
-    distribution = 'Ol'
+    distribution = 'Oracle'
     strategy_class = RedHatStrategy