Added OSRunning value for expected boot state

Changes:
     - Added default argument value as OSRunning for expected boot state.

Tested:
     - Ran successfully
       Wait For Host Boot Progress To Reach Required State.

Change-Id: I6f0b5259a1ee963ac6b57a46fb197b5f039defaa
Signed-off-by: praphullasuresh <Praphulla.S@ibm.com>
diff --git a/lib/utils.robot b/lib/utils.robot
index f77677c..35a2d8a 100755
--- a/lib/utils.robot
+++ b/lib/utils.robot
@@ -1006,7 +1006,7 @@
 
 Wait For Host Boot Progress To Reach Required State
     [Documentation]  Wait till host boot progress reaches required state.
-    [Arguments]      ${expected_boot_state}
+    [Arguments]      ${expected_boot_state}=OSRunning
 
     # Description of argument(s):
     # expected_boot_state    Expected boot state. E.g. OSRunning, SystemInitComplete etc.