Fix obfuscation of luci secrets in cluster plug-in
Fix regular expression anchors and quoting in libvirt
Pass --from argument to crm_report script

The crm_report script expects a --from date and will not collect
data unless this is passed. Default to passing a value 72 hours
before the current time and add a 'crm_from' option to the cluster
module to allow the user to override this.