Fix sonar blocker/critical

Fix sonar blocker/critical

Also add back .gitignore
Sonar blocker for change condition always true. Easier to re-write
this using try-with-resources.
Use synchronized static method to set a static variable.
Don't use e.printStackTrace it causes sonar critical to log exception
Log the bytes read. Ideally I would re-write this using Java 8 NIO

Issue-ID: POLICY-195
Change-Id: I080d1ad4c8bea91f87c3eca109325700e1589558
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>