vmm: vm: Add dirty log related passthrough methods

This allows code running in the VMM to access the VM's MemoryManager's
functionality for managing the dirty log including resetting it but also
generating a table.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/src/vm.rs

@@ -1704,6 +1704,19 @@ impl Vm {
 
         Ok(table)
     }
+
+    pub fn start_memory_dirty_log(&self) -> std::result::Result<(), MigratableError> {
+        self.memory_manager.lock().unwrap().start_memory_dirty_log()
+    }
+
+    pub fn dirty_memory_range_table(
+        &self,
+    ) -> std::result::Result<MemoryRangeTable, MigratableError> {
+        self.memory_manager
+            .lock()
+            .unwrap()
+            .dirty_memory_range_table()
+    }
 }
 
 impl Pausable for Vm {