Enhance the installer logs to pull in failures from dependent services
Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1297559
See https://bugzilla.redhat.com/show_bug.cgi?id=1245506. 3 of the Issues deal with pulling failures from dependent log files into the installer:
How to pull in log files from postgresql not starting
How to pull in log files from mongo not starting.
How to pull in log files from qpidd.