Improved AUTO_RESTART to prevent 2x uwsgi bounce. (#45)

The previous implementation of the AUTO_RESTART setting was causing
uwsgi have two separate configs installed one after the other very
quickly, which was causing issues.

This change fixes that by deleting the 'enabled' uwsgi config just
before re-generating it if AUTO_RESTART is true. This has the same basic
effect (reload on change) without the double-triggering of uwsgi reload.

piku.py

@@ -374,9 +374,6 @@ def do_deploy(app, deltas={}):
             else:
                 echo("-----> Could not detect runtime!", fg='red')
             # TODO: detect other runtimes
-            if settings.get("AUTO_RESTART", False):
-                echo("-----> Auto-restarting.", fg='green')
-                do_restart(app)
         else:
             echo("Error: Invalid Procfile for app '{}'.".format(app), fg='red')
     else:
@@ -653,6 +650,13 @@ def spawn_app(app, deltas={}):
     write_config(live, env)
     write_config(scaling, worker_count, ':')
     
+    if env.get("AUTO_RESTART", False):
+        config = glob(join(UWSGI_ENABLED, '{}*.ini'.format(app)))
+        if len(config):
+            echo("-----> Removing uwsgi configs to trigger auto-restart.")
+            for c in config:
+                remove(c)
+
     # Create new workers
     for k, v in to_create.items():
         for w in v: