Adding missing timeout config

Signed-off-by: Akila Perera <ravihansa3000@gmail.com>
diff --git a/tools/stratos-installer/config/all/repository/conf/autoscaler.xml b/tools/stratos-installer/config/all/repository/conf/autoscaler.xml
index 7e3c4ca..196e0a8 100755
--- a/tools/stratos-installer/config/all/repository/conf/autoscaler.xml
+++ b/tools/stratos-installer/config/all/repository/conf/autoscaler.xml
@@ -35,5 +35,8 @@
 			<port>SM_LISTEN_PORT</port>
             		<clientTimeout>300000</clientTimeout>
 		</stratosManager>
+		<member>
+			<expiryTimeout>900000</expiryTimeout>
+		</member>
 	</autoscaler>
 </configuration>