add support for dns
add support for capDrop
fix boolean variables in tests
refactor tests
add support for domainName
add support for memory and memoryswap
add support for cpuset
test multiple cases for a given field
Merge pull request #27 from sidharthamani/parity

Container Create Fields : dns, dns_search, cap_add, cap_drop, privilege, domainname, memory, memorySwap, cpuSet and tests