Add GC "time" on each collector on nInput_JavaGC

**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
