Metacat

include isPublic criteria when there is a public subject (which is always)

Remove the byte array field.

Add code to determine if a id exists in a solr server.

Add a field to contain the content of resource map.

Add a util class to judge if a namespace is a resource map file.

update to use v2 types for indexing

Unify solr indexing with an IndexTask that is added to the queue -- allows us to send more than just the systemMetadata to the indexer. Initially this is for READ event counts for each document. https://projects.ecoinformatics.org/ecoinfo/issues/6346

Some settings will be shared between metacat and metacat-index components.

Modified the documentation.

Change it from an interface to an abstract class in the document.