systest:  Add test to exercise HTX soft bootme option

- Remove trailing spaces

Test:
- Test was run with intervals: 2 hours, 11 hrs, 24 hrs and 48 hrs

Change-Id: I2faa7a273464acdbd4e01273c05037b1220e7ea2
Signed-off-by: Peter D  Phan <peterp@us.ibm.com>
diff --git a/syslib/resource.robot b/syslib/resource.robot
index 10b1ba3..241ec77 100755
--- a/syslib/resource.robot
+++ b/syslib/resource.robot
@@ -14,3 +14,10 @@
 # Default MDT profile.
 ${HTX_MDT_PROFILE}   mdt.bu
 
+# HTX bootme_period:
+#        1 - every 20 minutes
+#        2 - every 30 minutes
+#        3 - every hour
+#        4 - every midnight
+${BOOTME_PERIOD}    1
+