[stable-2.8] hostname - Correct distribution for various Linux distros based on output from distro library (#56936)

* Adjust hostname classes based on output from distro

Corrects the following:
- OpenSUSE Leap
- ArchARM
- Oracle Linux

* Add CoreOS and Clear Linux distributions
(cherry picked from commit bd55617a5b)

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

changelogs/fragments/hostname-update-distros.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - hostname - make module work on CoreOS, Oracle Linux, Clear Linux, OpenSUSE Leap, ArchARM (https://github.com/ansible/ansible/issues/42726)

lib/ansible/modules/system/hostname.py

@@ -583,12 +583,24 @@ class OpenSUSEHostname(Hostname):
     strategy_class = SystemdStrategy
 
 
+class OpenSUSELeapHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Opensuse-leap'
+    strategy_class = SystemdStrategy
+
+
 class ArchHostname(Hostname):
     platform = 'Linux'
     distribution = 'Arch'
     strategy_class = SystemdStrategy
 
 
+class ArchARMHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Archarm'
+    strategy_class = SystemdStrategy
+
+
 class RHELHostname(Hostname):
     platform = 'Linux'
     distribution = 'Redhat'
@@ -601,12 +613,24 @@ class CentOSHostname(Hostname):
     strategy_class = RedHatStrategy
 
 
+class ClearLinuxHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Clear-linux-os'
+    strategy_class = SystemdStrategy
+
+
 class CloudlinuxHostname(Hostname):
     platform = 'Linux'
     distribution = 'Cloudlinux'
     strategy_class = RedHatStrategy
 
 
+class CoreosHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Coreos'
+    strategy_class = SystemdStrategy
+
+
 class ScientificHostname(Hostname):
     platform = 'Linux'
     distribution = 'Scientific'
@@ -615,7 +639,7 @@ class ScientificHostname(Hostname):
 
 class OracleLinuxHostname(Hostname):
     platform = 'Linux'
-    distribution = 'Oracle'
+    distribution = 'Ol'
     strategy_class = RedHatStrategy