Modify %files section in rubygem-astute spec

Remove all hardcode files. Add  macros for astute files

Closes-bug:#1319073
Change-Id: If024334c50a19fb783d0272ab61a5257734f08b7
Merge "Modify %files section in rubygem-astute spec"
Fix wrong assignment of image name

Change-Id: Ic2d9189a95c646966b8d5b97bd7a565389b697a5
Closes-Bug: #1341464
Building OS images centos and ubuntu

Those images are supposed to be used for
image based provisioning. This patch set
needs python-imgcreate package to be available.

Implements: blueprint image-based-provisioning
Change-Id: I4f038c99d4caf7d2b6e291bff29572b3a45d92c7