docs: add SelectFilesystem to api status

Signed-off-by: John Mulligan <jmulligan@redhat.com>

docs/api-status.json

@@ -312,6 +312,14 @@
         "name": "UserPerm.Destroy",
         "comment": "Destroy will explicitly free ceph resources associated with the UserPerm.\n\nImplements:\n void ceph_userperm_destroy(UserPerm *perm);\n"
       }
+    ],
+    "preview_api": [
+      {
+        "name": "MountInfo.SelectFilesystem",
+        "comment": "SelectFilesystem selects a file system to be mounted. If the ceph cluster\nsupports more than one cephfs this optional function selects which one to\nuse. Can only be called prior to calling Mount. The name of the file system\nis not validated by this call - if the supplied file system name is not\nvalid then only the subsequent mount call will fail.\n\nImplements:\n int ceph_select_filesystem(struct ceph_mount_info *cmount, const char *fs_name);\n",
+        "added_in_version": "v0.20.0",
+        "expected_stable_version": "v0.22.0"
+      }
     ]
   },
   "cephfs/admin": {

docs/api-status.md

@@ -4,7 +4,11 @@
 
 ## Package: cephfs
 
-No Preview/Deprecated APIs found. All APIs are considered stable.
+### Preview APIs
+
+Name | Added in Version | Expected Stable Version | 
+---- | ---------------- | ----------------------- | 
+MountInfo.SelectFilesystem | v0.20.0 | v0.22.0 | 
 
 ## Package: cephfs/admin