Fix: index JUL event by name *and* loglevel

This is to support multiple loglevels for a JUL event.

Signed-off-by: David Goulet <dgoulet@efficios.com>
Tests: add JUL test for multiple loglevel

Signed-off-by: David Goulet <dgoulet@efficios.com>
Fix: handle loglevel range ALL in list command

Print the ":" if we get the ALL range and not TYPE UNKNOWN.

Signed-off-by: David Goulet <dgoulet@efficios.com>