Fix group capabilities #2424

Job	Run time
integration	1m 41s
go	15s
docker (docker/Dockerfile.revad) / docker	1m 32s
docker (docker/Dockerfile.revad-eos) / docker	47s
docker (docker/Dockerfile.reva) / docker	31s
docker (docker/Dockerfile.revad-ceph) / docker	2m 21s
docker (docker/Dockerfile.revad-eos) / docker	42s
acceptance-1 / compose	1m 54s
acceptance-2 (2) / compose	7m 5s
acceptance-2 (1) / compose	4m 49s
acceptance-2 (3) / compose	4m 7s
acceptance-2 (5) / compose	4m 21s
acceptance-2 (4) / compose	4m 48s
acceptance-2 (6) / compose	6m 11s
litmus (litmus-2) / compose	1m 22s
litmus (litmus-1) / compose	2m 30s
	44m 56s

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