Fix issues encountered during functional testing #447

Job	Run time
download and cache middlewares	14s
package and cache agent	1m 33s
Test for dubbo (2-5, 0)	10m 34s
Test for dubbo (2-5, 1)	10m 15s
Test for dubbo (2-5, 2)	10m 7s
Test for dubbo (2-5, 3)	10m 8s
Test for dubbo (2-5, 4)	10m 33s
Test for dubbo (2-5, 5)	10m 10s
Test for dubbo (2-5, 6)	10m 7s
Test for dubbo (2-5, 7)	11m 9s
Test for dubbo (2-5, 8)	10m 31s
Test for dubbo (2-5, 9)	10m 30s
Test for dubbo (2-5, 10)	10m 12s
Test for dubbo (2-6, 0)	10m 52s
Test for dubbo (2-6, 1)	10m 14s
Test for dubbo (2-6, 2)	10m 33s
Test for dubbo (2-6, 3)	10m 12s
Test for dubbo (2-6, 4)	10m 43s
Test for dubbo (2-6, 5)	10m 58s
Test for dubbo (2-6, 6)	10m 25s
Test for dubbo (2-6, 7)	10m 23s
Test for dubbo (2-6, 8)	11m 1s
Test for dubbo (2-6, 9)	10m 32s
Test for dubbo (2-6, 10)	10m 35s
Test for dubbo (2-6, 11)	10m 25s
Test for dubbo (2-6, 12)	10m 27s
Test for dubbo (2-7, 0)	11m 17s
Test for dubbo (2-7, 5)	10m 19s
Test for dubbo (2-7, 6)	10m 11s
Test for dubbo (2-7, 7)	9m 43s
Test for dubbo (2-7, 8)	9m 22s
Test for dubbo (2-7, 9)	9m 24s
Test for dubbo (2-7, 10)	11m 28s
Test for dubbo (2-7, 11)	11m 9s
Test for dubbo (2-7, 12)	11m 18s
Test for dubbo (2-6, 10.1)	10m 22s
Test for dubbo (2-7, 4.1)	10m 14s
Test for dubbo (2-7, 13)	11m 42s
Test for dubbo (2-7, 14)	11m 43s
Test for dubbo (2-7, 15)	10m 11s
	6h 41m 46s

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