cherry-pick fixes from better VM revert

This needed a fix for the datamodel_lifecycle and the datamodel hash

The minor schema version does not need to be changed since it was
already bumped in the corresponding cherry-pick that bumped it. I
elected to do that instead of keeping it the same.

Signed-off-by: Pau Ruiz Safont <pau.safont@vates.tech>

Author: psafont

ocaml/idl/datamodel_lifecycle.ml

@@ -252,7 +252,7 @@ let prototyped_of_message = function
   | "VTPM", "create" ->
       Some "22.26.0"
   | "VDI", "revert" ->
-      Some "26.1.13-next"
+      Some "26.15.0-next"
   | "host", "set_servertime" ->
       Some "26.0.0"
   | "host", "get_ntp_synchronized" ->

ocaml/idl/schematest.ml

@@ -3,7 +3,7 @@ let hash x = Digest.string x |> Digest.to_hex
 (* BEWARE: if this changes, check that schema has been bumped accordingly in
    ocaml/idl/datamodel_common.ml, usually schema_minor_vsn *)
 
-let last_known_schema_hash = "247a7b080219583e50e3e1a3c3c85b08"
+let last_known_schema_hash = "6147ef4f0f9c3bbbf0c2061e0a0d0010"
 
 let current_schema_hash : string =
   let open Datamodel_types in