Account for Differing CloudAPI/Docker Endpoints

[qdzlug]

Hi,

I'm going to throw a PR together for this, but wanted to log it. The Triton setup script assumes a certain API endpoint format (with datacenter at the beginning of the URL), which may not be the case for many non-Joyent datacenters.

For example:

$ ./setup.sh

Error! The Triton CLI configuration does not match the Docker CLI configuration.

Docker user: jay.schmidt
Triton user: jay.schmidt
Docker data center: docker
Triton data center: cloudapi

With a config of:

$ env | grep DOCKER
DOCKER_CLIENT_TIMEOUT=300
DOCKER_CERT_PATH=/Users/jschmidt/.sdc/docker/cak1-jay.schmidt
DOCKER_HOST=tcp://docker.cak-1.virington.com:2376
DOCKER_TLS_VERIFY=1
$ env | egrep "SDC|TRITON"
SDC_KEY_ID=6b:95:03:3d:d3:6e:52:69:01:96:1a:46:4a:8d:c1:7e
SDC_ACCOUNT=jay.schmidt
SDC_URL=https://cloudapi.cak-1.virington.com

In my case, the DC is the secondary item in the URL (due to using CMON). One possible fix is to just have a flag to ignore this check; a second fix is to actually query cloudapi/docker to check the datacenter. I'll work on this later this month.

Jay