Fix ping command option for macbook users

Changes:
       - MAC users using ping which doesnt support -w option

Change-Id: I45859fb45b184303080cd14a0b6f64578e8dc1a2
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/ffdc/ffdc_collector.py b/ffdc/ffdc_collector.py
index 121cb74..e1a9f5d 100644
--- a/ffdc/ffdc_collector.py
+++ b/ffdc/ffdc_collector.py
@@ -101,7 +101,7 @@
         Check if target system is ping-able.
 
         """
-        response = os.system("ping -c 1 -w 2 %s  2>&1 >/dev/null" % self.hostname)
+        response = os.system("ping -c 1 %s  2>&1 >/dev/null" % self.hostname)
         if response == 0:
             print("\n\t[Check] %s is ping-able.\t\t [OK]" % self.hostname)
             return True