Add GC "time" on each collector on nInput_JavaGC

[nmaguiar]

Is your feature request related to a problem? Please describe.
When using the nInput_JavaGC the gcCollectors map doesn't include the total time spent by that GC collector (original field "time")

Describe the solution you'd like
The "time" field should be added to the gcCollector map.

Describe alternatives you've considered
n/a

Additional context
n/a