Add osds argument to the osd-in/osd-out action

The `osds` parameter has been copied from function start/stop to preserve
the same functionality. By default, osd-in/osd-out needs list of IDs as
an argument or it will not do anything (previously, it applied the change
to all the osds). It's possible to take in/out *all* with provided `osds`
parameter as `all`.

Closes-Bug: #1910150
Change-Id: I0275f015e2d0bbbb661d2b7dea59c320ba6c021c

actions.yaml

@@ -9,11 +9,21 @@ osd-out:
     \
         USE WITH CAUTION - Mark unit OSDs as 'out'.
         Documentation: https://jaas.ai/ceph-osd/
+  params:
+    osds:
+      description: A comma-separated list of OSD IDs to start (or keyword 'all')
+  required:
+    - osds
 osd-in:
   description: |
     \
         Set the local osd units in the charm to 'in'.
         Documentation: https://jaas.ai/ceph-osd/
+  params:
+    osds:
+      description: A comma-separated list of OSD IDs to start (or keyword 'all')
+  required:
+    - osds
 list-disks:
   description: |
     \