Scan for factory entries in downtime

[juztas]

Here: https://github.com/dmwm/gwmsmon/blob/master/src/totalview-update#L837

Would be nice to scan also for downtimes inside the factory xmls, like: http://vocms0207.cern.ch/factory/monitor/schedd_status.xml

<entry name="CMSHTPC_T2_US_Caltech_cit">
<downtime status="True"/>
<total>
<ClientMonitor CoresIdle="2" CoresRunning="1039" CoresTotal="1056" GlideIdle="2" GlideRunning="282" GlideTotal="310" InfoAge="183" JobsIdle="267424" JobsRunHere="282" JobsRunning="49740"/>
<Requested Idle="0" IdleCores="0" MaxCores="0" MaxGlideins="0"/>
<Status Held="0" Idle="0" IdleOther="0" Pending="0" Running="22" RunningCores="704" StageIn="0" StageOut="0" Wait="0"/>
</total>
<frontends>
<frontend name="CMSG-v1_0_cmspilot">
<ClientMonitor CoresIdle="2" CoresRunning="1039" CoresTotal="1056" GlideIdle="2" GlideRunning="282" GlideTotal="310" InfoAge="733" JobsIdle="267424" JobsRunHere="282" JobsRunning="49740"/>
<Downtime status="True"/>
<Requested Idle="0" IdleCores="0" MaxCores="0" MaxGlideins="0">
<Parameters></Parameters>
</Requested>
<Status Held="0" Idle="0" IdleOther="0" Pending="0" Running="22" RunningCores="704" StageIn="0" StageOut="0" Wait="0"/>
<StatusEntries/>
</frontend>
</frontends>
</entry>

- means factory will not send new pilots.