add coverage for phase2 synchronizer #314

Job	Run time
component-tests (TestSynchronizer_TC01_InCluster)	5m 36s
component-tests (TestSynchronizer_TC01_Backend)	5m 20s
component-tests (TestSynchronizer_TC02_InCluster)	5m 6s
component-tests (TestSynchronizer_TC02_Backend)	5m 22s
component-tests (TestSynchronizer_TC04_InCluster)	5m 0s
component-tests (TestSynchronizer_TC04_Backend)	5m 5s
component-tests (TestSynchronizer_TC05_InCluster)	5m 13s
component-tests (TestSynchronizer_TC05_Backend)	4m 49s
component-tests (TestSynchronizer_TC06)	5m 17s
component-tests (TestSynchronizer_TC07)	4m 58s
component-tests (TestSynchronizer_TC08)	5m 19s
component-tests (TestSynchronizer_TC09)	5m 16s
component-tests (TestSynchronizer_TC10)	5m 19s
component-tests (TestSynchronizer_TC11)	5m 28s
component-tests (TestSynchronizer_TC12)	5m 24s
component-tests (TestSynchronizer_TC13_HTTPEndpoint)	4m 42s
pr-created / test / check if secrets are set	1s
pr-created / test / Create cross-platform build	6m 50s
pr-created / test / Basic-Test	10m 32s
	1h 40m 37s

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