Add aai model size post install check

Issue-ID: INT-1139
Change-Id: I95a63b7ab3ea29433e8f24cb1839349de7587faa
Signed-off-by: Brian Freeman <bf1936@att.com>
diff --git a/robot/testsuites/post-install-tests.robot b/robot/testsuites/post-install-tests.robot
index c11fd7b..06636b7 100644
--- a/robot/testsuites/post-install-tests.robot
+++ b/robot/testsuites/post-install-tests.robot
@@ -6,6 +6,7 @@
 Test Timeout      10 second
 
 Resource          ../resources/mr_interface.robot
+Resource          ../resources/aai/models.robot
 
 *** Test Cases ***
 
@@ -16,4 +17,5 @@
 
 Basic AAI Service Design Models Size Test
     [Tags]   aaimodels   postinstall
+    [Timeout]   60
     Validate Size Of AAI Models