egeria: Glossary Author error handling

*UPDATED 20210202 * The reported issue is resolved - issue being left open to address error handling

Using the coco pharma lab environment, glossary author fails to connect to the server with:

Error occurred
Full response: {"class":"SubjectAreaOMASAPIResponse","relatedHTTPCode":400,"exceptionClassName":"org.odpi.openmetadata.viewservices.glossaryauthor.services.GlossaryAuthorViewGlossaryRESTServices","actionDescription":"getConfig","exceptionErrorMessage":"OMAG-COMMON-400-016 An unexpected org.odpi.openmetadata.accessservices.subjectarea.server.services.SubjectAreaConfigRESTServices exception was caught by getConfig; error message was OMAG-MULTI-TENANT-404-001 The OMAG Server cocoMDS2 is not available to service a request from user garygeeke","exceptionSystemAction":"The system is unable to process the request.","exceptionUserAction":"Review the error message and other diagnostics created at the same time.","result":[]}