When running tox for sysinv, egg-info is created in this repo.
This causes the repo status and git status commands to show
unmanaged files.
By adding .egg-info to the .gitignore, those un-managed
files are ignored.
Change-Id: I7a993ae62c1ea5310d71519e5b95c8ff1200526b
Story: 2004515
Task: 37142
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>