Reordered the instance variable for the garbage collection metrics to be in the middle.
Reordered the instance variable for the garbage collection metrics to be in the middle.


Signed-off-by: chdavid <c478bd67d3e631a041cfcf10c95eaa528478545f@ca.ibm.com>

Channyboy/microprofile-metrics,pilhuhn/microprofile-metrics,Arjun-Sharma1/microprofile-metrics,raymondlam/microprofile-metrics,pilhuhn/microprofile-metrics,raymondlam/microprofile-metrics,Arjun-Sharma1/microprofile-metrics,Channyboy/microprofile-metrics