Added support for PASE installs

[abmusse]

In response to issue #68

[sjanuary]

@Ab-m you have several TODOs in this PR. Would it make sense to complete these before I merge this and tag a new branch and we put a release out? There's quite a lot of overhead for our team to do an appmetrics release so we don't do it very frequently.

[ThePrez]

@sjanuary, my preference would be to merge the current changes "as is", simply because:

• the remaining TODO items are non-trivial in nature and may take us some time to make sure we choose the best solution
• IBM i customers have a need for appmetrics and appmetrics-dash today, but it is broken entirely in its current state

So, I'd rather have a release with a partial implementation so that customers can be using this tool as soon as possible. Then, we'll fill in the remaining functions as we finalize the implementation for them.

[sjanuary]

@ThePrez - ok, I'm happy to merge it on that basis. We have a release planned for sometime in the next month anyway so we can release what you've done at that point. It would be good to put a statement about iPASE support in the README for appmetrics, perhaps that could be added to RuntimeTools/appmetrics#538?

[abmusse]

@sjanuary Yes adding a note in the README is a good idea. I will handle that.