Expose metrics from eos quota subcomand. ``` eos quota ls -m -n ``` ``` quota=node uid=xxxx space=/eos/test/ usedbytes=0 usedlogicalbytes=0 usedfiles=2 maxbytes=1000000000000 maxlogicalbytes=500000000000 maxfiles=1000000 percentageusedbytes=0.00 statusbytes=ok statusfiles=ok ```
Expose metrics from eos quota subcomand.