Fixed 2 failing specs. Related to previous commit for story #618.

One of the specs needed to be updated because of the code changes in the
previous commit.  The other spec revealed an existing problem with loss
of state due to differing in-memory objects.  That problem was solved by
adding inverse_of to the association.

app/models/xml_import.rb

@@ -19,7 +19,7 @@ class XmlImport < ApplicationRecord # rubocop:disable Metrics/ClassLength
   ##
   # @!attribute batch [rw]
   #   @return [Batch]
-  has_one :batch, as: :batchable
+  has_one :batch, as: :batchable, inverse_of: :batchable
 
   ##
   # @!method record?

spec/lib/tufts/import_record_spec.rb

@@ -119,7 +119,7 @@
       end
 
       it 'normalized metadata fields' do
-        expect(record.fields.to_a[1]).to eq([:abstract, ["Another long description with \n plenty\n of whitespace"]])
+        expect(record.fields.to_a).to include([:abstract, ["Another long description with \n plenty\n of whitespace"]])
       end
     end
   end

spec/presenters/xml_import_presenter_spec.rb

@@ -68,9 +68,7 @@
           .create(:hyrax_uploaded_file, file: File.open(file_fixture('2.pdf')))
       end
 
-      # 999 This spec is failing
       it 'changes to queued' do
-        optional 'Sometimes fails on travis' if ENV['TRAVIS']
         expect { import.batch.enqueue! }
           .to change { presenter.status }
           .to('Queued')