This patch addresses golint failures such as:
pkg/bootstrap/isogen/command_test.go:43:26: method GetId should be GetID
pkg/container/container_docker.go:171:27: method getImageId should be
getImageID
pkg/container/container_docker.go:193:27: method GetId should be GetID
Relates-To: #58
Change-Id: I7eb461387524f23a89bc2ae7ce59dac066c12281
Signed-off-by: Alexander Hughes <Alexander.Hughes@pm.me>