Feature: diff support for package managed files

[isbm]

This feature allows to find out the following:

1. File(s) is unchanged and is as same as vendor supported (in original, latest available package).
2. File(s) is not managed by anything (does not belongs to any package)
3. Requested file(s) is not installed on current system.
4. File(s) is changed and diff from the original file is provided.

An example:

# salt '*' pkg.diff /etc/nsswitch.conf /etc/passwd /etc/sudoers
e162.suse.de:
    ----------
    /etc/nsswitch.conf:
        Unchanged
    /etc/passwd:
        Not managed
    /etc/sudoers:
        --- A /etc/sudoers
        +++ B /etc/sudoers
        @@ -71,7 +71,7 @@
         ## User privilege specification
         ##
         root ALL=(ALL) ALL
        -
        +bofh ALL=(ALL) NOPASSWD: ALL
         ## Uncomment to allow members of group wheel to execute any command
         # %wheel ALL=(ALL) ALL

@thatch45, YUM is coming soon, I don't have CentOS at the moment under my hand. Their YUM needs plugins installed, so there should be additional checks for this.

[thatch45]

Thanks @isbm ! Sorry I have not replied to your email about this yet. I am buried right now :)