jingle outgoing test: add MembersChangedDetailed flag to base flags
jingle outgoing test: add MembersChangedDetailed flag to base flags

telepathy-glib ≥ 0.16.2 always sets the Members_Changed_Detailed flag
in the group mixin, so now that we depend on tp-glib ≥ 0.17.1 we
should expect that too.

Signed-off-by: Jonny Lamb <3d1fb3642aaab2ff70e3392a5ab916bf99eed6a3@collabora.co.uk>

Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble