gitignore /*.egg

When installing the project I ended up with the following eggs in my
working copy:

 d2to1-0.2.10-py2.7.egg/
 pbr-0.5.18-py2.7.egg
 setuptools_git-1.0-py2.7.egg

Change-Id: Ie7a1be8631d22ab73d12ad4739355888db01d19a
Merge "gitignore /*.egg"