[Tools] testbot: Trace the revert time.

[Francois Gouget]

Signed-off-by: Francois Gouget <fgouget at free.fr>
---

This is mostly cosmetic and simply makes it easier to quickly see the 
revert times when inspecting the log.

 testbot/bin/RevertVM.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testbot/bin/RevertVM.pl b/testbot/bin/RevertVM.pl
index f84082fd..00a87216 100755
--- a/testbot/bin/RevertVM.pl
+++ b/testbot/bin/RevertVM.pl
@@ -222,6 +222,6 @@ if (defined($ErrMessage))
   FatalError "Could not change status for VM $VMKey: $ErrMessage\n", $VM;
 }
 
-LogMsg "Revert of $VMKey completed\n";
+LogMsg "Revert of $VMKey completed in ", Elapsed($Start), " s\n";
 
 exit 0;
-- 
2.14.1