IPMItool version considerations for testing

Cipher 17 works only on ipmitool version 1.8.18

Change-Id: I84cff6be3fcf5a04ef6ced3a9b8e291aca99aa3f
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/Tools.md b/Tools.md
index b320694..4e75b61 100644
--- a/Tools.md
+++ b/Tools.md
@@ -1,5 +1,13 @@
 ## Tools used in OpenBMC Test Automation ##
 
+## IPMItool considerations: ##
+
+IPMItool version 1.8.18 or later.
+```
+    $ ipmitool -V
+    ipmitool version 1.8.18
+```
+
 ## Hardware Test Executive (HTX): ##
 
 HTX is a suite of test tools for stressing system hardware. It is routinely