Tests

feat(testcontainers): refactor vshard and cartridge containers #159

Job	Run time
tests-unit	4m 39s
tests-crud-integration (2.11.8-ubuntu20.04)	7m 38s
tests-crud-integration (3.5.0)	1m 43s
tests-box-integration (2.11.8-ubuntu20.04)	9m 37s
tests-box-integration (3.5.0)	9m 15s
	32m 52s

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