Fix Internal TargetInformationRetriever filter
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This merge request is automatically copied from !407 (merged) orginally made by @andrii
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This commit filter Endpoints that can be used by internal to file://
URIs or exact localhost
name.
The result looks sane:
DEBUG: Found HED:TargetInformationRetrieverPlugin INTERNAL (it was loaded already)
DEBUG: The endpoint (arc6.univ.kiev.ua) is not supported by this plugin (INTERNAL)