add support for capAdd
add tests for create container with privileged flag on
add support for dns
add support for dnsSearch and capDrop
add support for domain name
add support for memory and memory swap
add support for cpuSet
Merge pull request #37 from sidharthamani/parity

API parity for following fields in container create: cap_add, cap_drop, dns, dns_search, domainname, memory, memory_swap, cpuset