TOOLS-1587 'triton profile docker-setup' fails when path to 'docker' has spaces

Reviewed by: Julien Gilli <julien.gilli@joyent.com>
Reviewed by: Orlando Vazquez <orlando@joyent.com>
Approved by: Orlando Vazquez <orlando@joyent.com>

lib/common.js

@@ -834,8 +834,7 @@ function execPlus(args, cb) {
                 + '\tstdout:\n%s\n'
                 + '\tstderr:\n%s',
                 cmd, err.code, stdout.trim(), stderr.trim());
-            cb(new errors.InternalError({message: msg, cause: err}),
-               stdout, stderr);
+            cb(new errors.InternalError(err, msg), stdout, stderr);
         } else {
             cb(null, stdout, stderr);
         }

lib/do_profile/profilecommon.js

@@ -313,7 +313,7 @@ function profileDockerSetup(opts, cb) {
                 return;
             }
             common.execPlus({
-                cmd: arg.dockerPath + ' --version',
+                cmd: format('"%s" --version', arg.dockerPath),
                 log: log
             }, function (err, stdout, stderr) {
                 if (err) {