Upgrade findbugs to spotbugs (#615)
* Upgrade findbugs to spotbugs 3.1.3
* Rename all findbugs to spotbugs
Remove remaining references to findbugs (from @ctubbsii):
* Add more information about spotbugs false positive to PropertyType
* Fix RFileTest with assertion to address return types from file system operations
* Fix ShellServerIT by adding a simple comment to ensure the expected
exception block is limited to the expected exception type and isn't empty
(also make use of static Assert imports consistent for this class)
1 file changed
