sqldeveloper: 17.3.1.279.0537 -> 17.4.0.355.2349

 - Java 9 (JDK) is now supported
 - Data Guard in DBA panel is only available for 12c and higher connections
 - Updated the NoSQL drivers to version 4.5
 - Added support for defining consumer group mappings for CLIENT_ID
 - Preferences Search feature now covers all options
 - Differentiate between a temporary connection used in the unshared worksheet and a truly private connection used internally for things like the UT Repos or the Instance Viewer....the naming logic for the Unshared Worksheet is now 'MyConn (Unshared)' instead of 'MyConn__1'
 - RAC support added to Real Time SQL Monitoring