RCPP-63 Switch to using Baasaas for sync tests #86

Job	Run time
build (ubuntu-latest, Debug, True)	11m 31s
build (ubuntu-latest, Debug, False)	11m 51s
build (ubuntu-latest, Release, True)	9m 54s
build (ubuntu-latest, Release, False)	9m 42s
build (windows-latest, Debug, True)	20m 43s
build (windows-latest, Debug, False)	19m 47s
build (windows-latest, Release, True)	12m 35s
build (windows-latest, Release, False)	13m 18s
build (macos-latest, Debug, True)	7m 42s
build (macos-latest, Debug, False)	7m 3s
build (macos-latest, Release, True)	9m 34s
build (macos-latest, Release, False)	9m 3s
	2h 22m 43s

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