Bug 3231 jolokia access should be controlled by aaa

Due to unfortunate lack of support, we are going to have to just use
basic authentication from config file for now.  I have committed this
patch to upstream jolokia:
https://github.com/rhuss/jolokia/pull/225
which will unlock power for us to use AAA.  However, this won't be
available until a new release is cut on Jolokia's end.

The only options for jolokia-osgi bundle for authentication are basic
file authn (which is implemented in this proposed changeset) and JAAS.
ODL's JAAS is unencrypted and generally disregarded, so basic file
authN was chosen.  By default, the credentials are admin/admin.

Change-Id: I35770bcf13b3cb32e59685e9bbf0ef47d73d132f
Signed-off-by: Ryan Goulding <ryandgoulding@gmail.com>