[PATCH phosphor-networkd] Enabling updates to /etc/resolve.conf either manually or using DHCP supplied DNS IP

[OpenBMC Patches]

Provide dbus APIs to provide nameserver IPs and update them in /etc/resolv.conf
Also, register watch for /run/systemd/netif/state for DHCP and take the DNS entries and update /etc/resolv.conf

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="35" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/openbmc/phosphor-networkd/13)
<!-- Reviewable:end -->


https://github.com/openbmc/phosphor-networkd/pull/13

vishwa (1):
  Enabling updates to /etc/resolve.conf either manually or using DHCP
    supplied DNS     IP

 Makefile           |  29 +++++
 netman.py          |  26 +++++
 netman_watch_dns.c | 329 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 384 insertions(+)
 create mode 100644 Makefile
 create mode 100644 netman_watch_dns.c

-- 
2.7.1