Support the format of crash dump directory for RHEL7.1 and CentOS7.1
Support the format of crash dump directory for RHEL7.1 and CentOS7.1

Currently, crash checks support only below format.
YYYYMMddHHmm (e.g. 201509032311)
Support the format of RHEL7.1 and CentOS7.1.
<IP-address>-YYYY.MM.dd-HH:mm:ss (e.g. 127.0.0.1-2015.10.02-16:07:51)

Change-Id: Ia023edc3505e584200b043814480bfcfbd60920c
Closes-Bug: #1500766

sapcc/monasca-agent,sapcc/monasca-agent,sapcc/monasca-agent