Increase timeout for healthdist

heathdist often fails due to timeout in the labs.
Increase the timeout even more to try to fix it.

Change-Id: I57875c713dd3a2c38df3047c54b91cbdf8eb358b
Issue-ID: INT-586
Signed-off-by: gwu <gary.i.wu@huawei.com>
diff --git a/robot/testsuites/health-check.robot b/robot/testsuites/health-check.robot
index 650069e..bad0885 100644
--- a/robot/testsuites/health-check.robot
+++ b/robot/testsuites/health-check.robot
@@ -39,7 +39,7 @@
 Basic AAF SMS Health Check
     [Tags]    health    core
     Run SMS Health Check
-    
+
 Basic APPC Health Check
     [Tags]    health    core
     Run APPC Health Check
@@ -202,7 +202,7 @@
 
 Health Distribution Test
     [Tags]    healthdist
-    [Timeout]   300
+    [Timeout]   600
     Model Distribution For Directory    vFW
 
 Portal Login Tests