rhevm-log-collector not safe for all security credentials

Issue

rhevm-log-collector (from rhevm-log-collector-3.3.1-6.el6ev.noarch) gathers files that may leak secure credentials into the tarball

A brief review of what is being included in the rhevm-log-collector output, we've noticed:

• A database password could be sent here: /etc/ovirt-engine/ovirt-engine-dwh/Default.properties
• Initial passwords leaked here: /var/lib/ovirt-engine/setup/answers/YYYYMMDDHHMMSS-setup.conf
• In each of the per-hypervisor sosreports VDSM PKI private keys leaked: /etc/vdsm/keys