Metacat

do not use tmp file to return an inputstream on read() operations - just read from the file we already have. https://projects.ecoinformatics.org/ecoinfo/issues/6009

use standard File.createTempFile() method for uploaded data files and delete them when we are done with them. https://projects.ecoinformatics.org/ecoinfo/issues/6008

correct regex for whitespace in D1 identifier.

use an independent ISet<SystemMetadata> structure to communicate objects that should be indexed by metacat-index. https://projects.ecoinformatics.org/ecoinfo/issues/5943

do not create solr-home if there is no template to compy into that directory (need to be able to create it later if/when someone decides to use and deploy metacat-index). https://projects.ecoinformatics.org/ecoinfo/issues/6006

do not attempt to copy solr-home template from metacat-index webapp if it does not exist. This would be in cases where metacat-index is not deployed. https://projects.ecoinformatics.org/ecoinfo/issues/6006

Solr will be enabled if it is in the db.enabledEngines.

do not require PortalCertificateManager be configured. Fix NPE because session was not created when using old sessionid-based authentication. https://projects.ecoinformatics.org/ecoinfo/issues/5942

handle client certificates, portal certificates and jsessionid as three ways to prove you are an uthenticated user. https://projects.ecoinformatics.org/ecoinfo/issues/5942

Use some contants from the EnabledQueryEngines.