Extend preserved files

[jesusbv]

Add option to preserve /etc/sysconfig/proxy file.

This fixes #180

[schaefi]

@jesusbv Thanks the implementation is good and will work. However I think we should make it a bit more flexible. What if another user wants to preserve some other file from /etc, then we need to add more code like this and have to run another submission which is an expensive/painful process as you know ;)

I was thinking about something like:

static:
  - /etc/sysconfig/proxy

That way we would also support any static file to be preserved by a simple copy process.

Thoughts ?

[jesusbv]

static:
  - /etc/sysconfig/proxy

That way we would also support any static file to be preserved by a simple copy process.

Thoughts ?

I like the idea but I limited it to proxy because I wasn't sure about the scope of the files we wanted to include. Will update it.

[schaefi]

yeah we can't be sure what people want/need to preserve more in the future but I think allowing this as a general feature is not a bad idea. Thanks for updating :+1:

[rjschwei]

Documentation will also need to be updated.

[schaefi]

@jesusbv Just go ahead and merge after squash. NOTE: Please remember we need a bugzilla number for this to avoid trouble with maintenance. If there is no bugzilla report we can refer this to, please add a bug in bugzilla and use the number here in the commit message as "bsc#NR" Thanks much