Added new test cast for os install and bootme

Added error checking to "Install HTX On Redhat"

Change-Id: Ieeafb5a04ad466cfabeaf72d58274432112116db
Signed-off-by: Joy Onyerikwu <onyekachukwu.joy.onyerikwu@ibm.com>
diff --git a/syslib/utils_os.robot b/syslib/utils_os.robot
index 942d26e..ac61680 100755
--- a/syslib/utils_os.robot
+++ b/syslib/utils_os.robot
@@ -426,6 +426,10 @@
 
 Check HTX Run Status
     [Documentation]  Get HTX exerciser status and check for error.
+    [Arguments]  ${sleep_time}=${EMPTY}
+
+    # Description of argument(s):
+    # sleep_time  The amount of time to sleep after checking status.
 
     Rprint Timen  Check HTX mdt Status and error.
     ${htx_status}=  Execute Command On OS
@@ -438,6 +442,10 @@
     Should Contain  ${htx_errlog}  file </tmp/htxerr> is empty
     ...  msg=HTX geterrorlog was not empty.
 
+    Return From Keyword If  ${sleep_time} == ${EMPTY}
+
+    Run Key U  Sleep \ ${sleep-time}
+
 
 Shutdown HTX Exerciser
     [Documentation]  Shut down HTX exerciser run.