Fix bootproto string parser for interface config type
Fix bootproto string parser for interface config type

A split() lookup function had incorrect syntax, forcing
lookups to fall back to dhclient process lookup, which
means switching from dhcp back to static will show in
the UI as "DHCP" type alwys.

Change-Id: I4fa405276e0af745812c411948358e971cf7ee6b
Closes-Bug: #1481022

eayunstack/fuel-web,stackforge/fuel-web,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,eayunstack/fuel-web,huntxu/fuel-web,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,stackforge/fuel-web,eayunstack/fuel-web,huntxu/fuel-web,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,stackforge/fuel-web