Monitor JVM logs and plug custom metrics

[Unitech]

[monitor.jvm ] [Antiphon the Overseer] [gc][old][84335][3599] duration [14.8s], collections [1]/[14.9s], total [14.8s]/[15.7m], memory [28.9gb]->[28.8gb]/[28.9gb], all_pools {[young] [532.5mb]->[532.5mb]/[532.5mb]}{[survivor] [60mb]->[8.9mb]/[66.5mb]}{[old] [28.3gb]->[28.3gb]/[28.3gb]}