Define procedure of configuration and coordination on dnsmasq (ics_dnsmasq repo) for production and development

Define procedure of configuration and coordination for entire ics_dnsmasq repo incl branches.

• organization of master and branches (assuming master for production, branch with site name) - INSTRM-43
• organization of configuration files - both DHCP and DNS
• procedure of registration for hosts (mac addr to name)
• IP address range assignment in production