Integration test to periodically pull nodemanager logs from nodes

[choksi81]

I propose having an integration test that will pull nodemanager logs from our nodes (softwareupdater.old and nodemanager.old, *.new files if they exist as well) periodically, to potentially uncover issues that we may not be aware of. Monzur mentioned he had a script that was used for this purpose before, so if possible we should get that integrated into our monitoring test suite and into our repository.

[choksi81]

There is an old version of something like this in trunk/node_monitor/ and trunk/node_stat_and_info/.