Fix HTX error message check

Message changed from /tmp/htxerr to /tmp/htx/htxerr

Change-Id: Iab812c22cccab3b8aeccc4bacc600d326d5d0d49
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/syslib/utils_os.robot b/syslib/utils_os.robot
index 3e90c25..aa3952f 100755
--- a/syslib/utils_os.robot
+++ b/syslib/utils_os.robot
@@ -515,7 +515,7 @@
     ...  htxcmdline -geterrlog
     Printn  ${htx_errlog}
 
-    Should Contain  ${htx_errlog}  file </tmp/htxerr> is empty
+    Should Contain  ${htx_errlog}  file </tmp/htx/htxerr> is empty
     ...  msg=HTX geterrorlog was not empty.
 
     Return From Keyword If  "${sleep_time}" == "${0}"