implementing SetInterfaceMac

Docker-DCO-1.1-Signed-off-by: Malte Janduda <mail@janduda.net> (github: MalteJ)
MACAddress -> MacAddress

Docker-DCO-1.1-Signed-off-by: Malte Janduda <mail@janduda.net> (github: MalteJ)
Merge pull request #208 from MalteJ/master

Expose parameter to set interface MAC address