Update test_integration.rb sleep to 15

Author: noahg1

test/integration/test_integration.rb

@@ -151,7 +151,7 @@ def test_create_call_with_amd_and_get_call_state
         assert(response.data.call_id.length > 0, "call_id value not set")
 
         #Get phone call information
-        sleep(5)
+        sleep(15)
         response = @bandwidth_client.voice_client.client.get_call(BW_ACCOUNT_ID, response.data.call_id)
         assert(response.data.state.length > 0, "state value not set")
     end