[snapm] add new plugin

Add a plugin for the snapm snapshot manager tool:

  https://github.com/snapshotmanager/snapm

Collect:

  * /etc/snapm configuration directory
  * snapm snapset list
  * snapm snapshot list
  * snapm plugin list
  * snapm schedule list
  * snapm -vv --debug=all snapset show

N.b: the /etc/snapm directory and the 'snapm schedule list' command are
part of the v0.5.0 release currently in testing. Earlier releases lack
these files/subcommands:

  https://github.com/snapshotmanager/snapm/releases/tag/v0.5.0

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>

Author: bmr-cymru

sos/report/plugins/snapm.py

@@ -0,0 +1,38 @@
+# Copyright (C) 2025 Red Hat, Inc., Bryn M. Reeves <bmr@redhat.com>
+# This file is part of the sos project: https://github.com/sosreport/sos
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions of
+# version 2 of the GNU General Public License.
+#
+# See the LICENSE file in the source distribution for further information.
+
+from sos.report.plugins import Plugin, RedHatPlugin
+
+
+class Snapm(Plugin, RedHatPlugin):
+
+    short_desc = 'Snapsot manager'
+
+    plugin_name = 'snapm'
+    profiles = ('boot', 'system', 'storage')
+
+    packages = (
+        'python3-snapm',
+        'snapm',
+    )
+
+    def setup(self):
+        self.add_copy_spec([
+            "/etc/snapm",
+        ])
+
+        self.add_cmd_output([
+            "snapm snapset list",
+            "snapm snapshot list",
+            "snapm plugin list",
+            "snapm schedule list",
+            "snapm -vv --debug=all snapset show",
+        ])
+
+# vim: set et ts=4 sw=4 :