Another attempt at dealing with python version 2.6 for fabric api

aws/launch_AWS_instance.py

@@ -376,12 +376,12 @@ def module_exists(module_name):
 def exec_remote_cmd(cmd):
     from fabric.operations import run, put
     from fabric.api import hide,settings
+    if float(sys.version_info[1])==float(6):
+	with hide('output','running','warnings') and settings(warn_only=True):
+                return run(cmd)
     if float(sys.version_info[1])>=7: 
 	with hide('output','running','warnings'), settings(warn_only=True):
         	return run(cmd)
-    if float(sys.version_info[1])<7:
-	with hide('output','running','warnings') and settings(warn_only=True):
-                return run(cmd)
 #==============================
 def query_yes_no(question, default="no"):
 	valid = {"yes": True, "y": True, "ye": True,"no": False, "n": False}