Using AAA based basic Auth

AAA has added basic auth for RestConf, we will be using that in dlux
Eventually, once token based authentication has Rest API, we will use those of AAA

Change-Id: I94bf4b75188d8a82cfe3910be77a509029cfdde7
Signed-off-by: Harman Singh <harmasin@cisco.com>
Merge "Using AAA based basic Auth"