Pretty print version manifest to pkg folder

[balasankarc]

Description

The version-manifest file that goes into the package is already being pretty printed - /~https://github.com/chef/omnibus/blob/master/lib/omnibus/project.rb#L1100 . Let's do that to the one being stored to pkg folder so it is easier to read.

Maintainers

Please ensure that you check for:

• [] If this change impacts git cache validity, it bumps the git cache
  serial number
• [] If this change impacts compatibility with omnibus-software, the
  corresponding change is reviewed and there is a release plan
• [] If this change impacts compatibility with the omnibus cookbook, the
  corresponding change is reviewed and there is a release plan

[tas50]

@balasankarc Can you rebase this against master, sign off the commit and take a peak at those CI failures.

[balasankarc]

@tas50 Rebased. :)

[tas50]

Thanks @balasankarc