Unify metrics_collection and metrics_daemon into metrics.

src/platform/metrics/syslog_parser.sh

 #! /bin/sh
 
 # This script parses /var/log/syslog for messages from programs that log
 # uptime and disk stats (number of sectors read).  It then outputs
 # these stats in a format usable by the metrics collector, which forwards
 # them to autotest and UMA.
 
 # To add a new metric add a line below, as PROGRAM_NAME  METRIC_NAME.
 # PROGRAM_NAME is the name of the job whose start time we
 # are interested in.  METRIC_NAME is the prefix we want to use for
@@ skipping 49 matching lines @@
 # Do all the differencing here
 program="${program}\
 END{
   for (i in metrics_stop) {
     value_time = metrics_stop[i] - metrics_start[i];
     print i \"=\" value_time;
   }
 }"
 
 exec awk "$program" /var/log/syslog