Adding ability to operate with interface parameter

Since NTP uses UDP it listen for ports even in client mode.
This patch adds the ability to manage interfaces for listening from
client pillar also.

Added support for enabling mode7 from client pillar

Prod-related: #PROD-28867 (PROD:28867)
Prod-related: #PROD-28576 (PROD:28576)

Change-Id: I67b4a07dc47e24bf69c180a3b5e3d93dd1cf2808
2 files changed