CC-1740: RO link checker: force checking of identifier_uri_link links
CC-1740: RO link checker: force checking of identifier_uri_link links

The link type "identifier_uri_link" did not match the
pattern "*_url", so links of that type were only checked if
they began with "http". Now, force all links of that type
to be checked.

au-research/ANDS-Registry-Core,au-research/ANDS-Registry-Core,au-research/ANDS-Registry-Core,au-research/ANDS-Registry-Core,au-research/ANDS-Registry-Core