fix: make provisioning server work again

Author: michaelfig

packages/cosmic-swingset/lib/ag-solo/vats/vat-http.js

@@ -171,7 +171,7 @@ function build(E, D) {
             D(commandDevice).sendResponse(
               count,
               false,
-              handler[type](obj, meta),
+              await handler[type](obj, meta),
             );
             return;
           }

packages/cosmic-swingset/provisioning-server/src/ag_pserver/main.py

@@ -29,14 +29,14 @@ class SetConfigOptions(usage.Options):
 
 class AddPubkeysOptions(usage.Options):
     optParameters = [
-        ["controller", "c", "http://localhost:8002/vat", "controller's listening port for us to send control messages"],
+        ["controller", "c", "http://localhost:8002/private/repl", "controller's listening port for us to send control messages"],
     ]
 
 class StartOptions(usage.Options):
     optParameters = [
         ["mountpoint", "m", "/", "controller's top level web page"],
         ["listen", "l", "tcp:8001", "client-visible HTTP listening port"],
-        ["controller", "c", "http://localhost:8002/vat", "controller's listening port for us to send control messages"],
+        ["controller", "c", "http://localhost:8002/private/repl", "controller's listening port for us to send control messages"],
     ]
 
 class Options(usage.Options):

packages/deployment/main.js

@@ -508,7 +508,7 @@ show-config      display the client connection parameters
           '/usr/src/app/ve3/bin/ag-pserver',
           'add-pubkeys',
           '-c',
-          'http://localhost:8000/vat',
+          'http://localhost:8000/private/repl',
         ]),
       );
 
@@ -529,7 +529,7 @@ show-config      display the client connection parameters
         pserverPassword === ''
           ? ''
           : ` -m ${shellEscape(`/provision-${pserverPassword}`)}`;
-      const execline = `/usr/src/app/ve3/bin/ag-pserver start${pserverFlags}${mountpoint} -c http://localhost:8000/vat`;
+      const execline = `/usr/src/app/ve3/bin/ag-pserver start${pserverFlags}${mountpoint} -c http://localhost:8000/private/repl`;
       await guardFile(`${CONTROLLER_DIR}/service.stamp`, () =>
         needReMain([
           'play',