Add errors for alarm api
Add constans for alarm
Add alarm model
Add alarms table
Add alarm api
Add metric_collector and metric_monitor.
Add error for alarm api
Add constants for alarms
Rename constance name
Fix create alarm api
Add update alarm api
Fix alarm model
Merge pull request #448 from axsh/feature-alarm-api

Feature alarm api
add parser for metric data.
Merge branch 'feature-alarm' into feature-metric-alarm
fix syntax function name.
Rename tag name
Modify conditions to elsif.
Modify method for destroy model.
pid qcquisition method was changed into File.read from sh.