[FAB-7894] Use recursive references
[FAB-7894] Use recursive references

Since affiliation responses are recursive,
the swagger doc needs to use references.

Change-Id: Iee1887f39df53dfc2be40a95bb06dac8b65734a1
Signed-off-by: Saad Karim <d1da09defa5b48f678dafc09ede657abebbe94c4@us.ibm.com>

saadk10/fabric-ca,saadk10/fabric-ca