Migrate and map Primary Set values to OAI Collection

[wickr]

Primary Set values will also need to be mapped to OAI Collections in OD2. These aren't yet made, but will function in a similar way, with membership limited to one.

Will likely need a mapping file to handle pid differences.

Related to #30

[lsat12357]

can the new collections be the coll ids + "-oai"
like ken-gray-oai
then just a little bit of extra code can be added to admin_set_membership_service to add the oai coll to the member_of_collections_attributes hash

[lsat12357]

collection type is oai_set
check to make sure this type exists before generating all the oai_sets

[lsat12357]

anything with a primarySet gets an oai_set, but are there any assets with primarySet that are restricted?
if so, may need logic to prevent an oai_set being assigned.
ok there are definitely assets with primarySet but are restricted. could remediate, but primarySet is useful for setting adminSet.
Solution: reverse order in stack, so that visibility runs first.
check if visibility==open before adding oai_set to the work.