Update OSD replacement functionality

1. Simplify this by leveraging the existing remove_osd/add_osd
functions, since its task was functionally identical to those two in
sequential order.
2. Add support for split OSDs within the command (replacing all OSDs on
the block device(s) as required).
3. Add additional configurability and flexibility around the old device,
weight, and external DB LVs.

api-daemon/pvcapid/helper.py

@@ -1398,11 +1398,21 @@ def ceph_osd_add(
 
 
 @ZKConnection(config)
-def ceph_osd_replace(zkhandler, osd_id, device, weight):
+def ceph_osd_replace(
+    zkhandler,
+    osd_id,
+    new_device,
+    old_device=None,
+    weight=None,
+    ext_db_ratio=None,
+    ext_db_size=None,
+):
     """
     Replace a Ceph OSD in the PVC Ceph storage cluster.
     """
-    retflag, retdata = pvc_ceph.replace_osd(zkhandler, osd_id, device, weight)
+    retflag, retdata = pvc_ceph.replace_osd(
+        zkhandler, osd_id, new_device, old_device, weight, ext_db_ratio, ext_db_size
+    )
 
     if retflag:
         retcode = 200