Regardless of dependencies, `fig up` only attaches to what you specify

Without this, if you go:

    $ fig up -d db
    $ fig up web

you'll get output for both db and web, and Ctrl-C will kill them both.

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>

fig/cli/main.py

@@ -322,12 +322,14 @@ class TopLevelCommand(Command):
         recreate = not options['--no-recreate']
         service_names = options['SERVICE']
 
-        to_attach = self.project.up(
+        self.project.up(
             service_names=service_names,
             start_links=start_links,
             recreate=recreate
         )
 
+        to_attach = [c for s in self.project.get_services(service_names) for c in s.containers()]
+
         if not detached:
             print("Attaching to", list_containers(to_attach))
             log_printer = LogPrinter(to_attach, attach_params={"logs": True})