lib: Add dummy jars to stop ivy complaining
TestServiceFactory: Don't include Glacier2.AMI_Session_destroy

Glacier2.AMI_Session_destroy was removed in Ice3.5, but was
unused in any case.
OmeroCpp: Use boost::uuids in place of IceUtil::generateUUIDs

Since generateUUIDs was removed in Ice3.5, an alternative
means of generating UUIDs is required.  Here we generate
UUIDs using boost::uuids::random_generator.