Populate availabilityConstraints from GOKb package ingest

Purpose:

Some e-resource packages are only available to a set of organisations/consortia/regions. Following ERM-2306 a list of these constraints can be stored for each package. This story is to add populate this information when harvesting data from GOKb.

Requirements

There are two ways in which the relevant information is available from the GOKb package harvest in depending on the content of the //package/global tag which is already used to populate the availabilityScope

IF the <global> / availabilityScope == "Local" then use the content of //package/curatoryGroups/group/name to add values to the availabilityConstraints

e.g.

<package>
  <global>Local</global>
   ...
  <curatoryGroups>
    <group>
      <name>ZBW</name>
    </group>
  </curatoryGroups>
</package>

IF the <global> / availabilityScope == "Regional" OR "Consortium" then use the content of //package/globalNote

e.g.

<package>
  ...
  <global>Consortium</global>
  <globalNote>ZBW</global>
</package>

On updating an existing package the behaviour should be to remove all existing constraints and replace with ones in new package metadata