Create log files for components

[1000TurquoisePogs]

Currently, app-server & zss create log files.
Any other component or extension may or may not.
This causes people to think the log directory contains useful information, when it often doesnt.

This PR changes that by just having the launcher make log files for components.
The launcher already captures all output of components, so in this PR:

1. each component startup, a log file name is determined, the N newest files of that pattern are retained but others deleted
2. every message the launcher receives from a component is written to that file
3. each component stop, the log file is closed

New property zowe.logging.rolloverCount is used to determine how many files to keep.

log files are named

<zowe.logDirectory>/<zowe.job.prefix>_<haInstance>_<component>_<timestamp>.log

As you can see from the screenshot, names are lengthy but unique.
This allows for 1 log folder to be used by multiple zowes.

I have not implemented, but setting rolloverCount to 0 or a similar option could be a way to disable logging entirely if desired???

[struga0258]

I tested this pr and seems to be working as expected, the only issue is that we need to remove the old logs from being generated. We have 2 sets of zss and app-server logs.

[JoeNemo]

Approved.