Fix issues encountered during functional testing #451

Job	Run time
package and cache agent	1m 26s
download and cache middlewares	36s
Test for dubbo (2-5, 0)	1s
Test for dubbo (2-5, 1)	1s
Test for dubbo (2-5, 2)	1s
Test for dubbo (2-5, 3)	1s
Test for dubbo (2-5, 4)	1s
Test for dubbo (2-5, 5)	1s
Test for dubbo (2-5, 6)	1s
Test for dubbo (2-5, 7)	1s
Test for dubbo (2-5, 8)	1s
Test for dubbo (2-5, 9)	1s
Test for dubbo (2-5, 10)	1s
Test for dubbo (2-6, 0)	1s
Test for dubbo (2-6, 1)	1s
Test for dubbo (2-6, 2)	1s
Test for dubbo (2-6, 3)	1s
Test for dubbo (2-6, 4)	1s
Test for dubbo (2-6, 5)	1s
Test for dubbo (2-6, 6)	1s
Test for dubbo (2-6, 7)	1s
Test for dubbo (2-6, 8)	1s
Test for dubbo (2-6, 9)	1s
Test for dubbo (2-6, 10)	1s
Test for dubbo (2-6, 11)	1s
Test for dubbo (2-6, 12)	1s
Test for dubbo (2-7, 0)	1s
Test for dubbo (2-7, 5)	1s
Test for dubbo (2-7, 6)	1s
Test for dubbo (2-7, 7)	1s
Test for dubbo (2-7, 8)	1s
Test for dubbo (2-7, 9)	1s
Test for dubbo (2-7, 10)	1s
Test for dubbo (2-7, 11)	1s
Test for dubbo (2-7, 12)	1s
Test for dubbo (2-6, 10.1)	1s
Test for dubbo (2-7, 4.1)	1s
Test for dubbo (2-7, 13)	1s
Test for dubbo (2-7, 14)	1s
Test for dubbo (2-7, 15)	1s
	2m 40s

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