[test] smoke test fixes for managed jobs (#4217)

* [test] don't wait for old pending jobs controller messages

`sky jobs queue` used to output a temporary "waiting" message while the managed
jobs controller was still being provisioned/starting. Since #3288 this is not
shown, and instead the queued jobs themselves will show PENDING/STARTING.

This also requires some changes to tests to permit the PENDING and STARTING
states for managed jobs.

* fix default aws region

* [test] wait for RECOVERING more quickly

Smoke tests were failing because some managed jobs were fulling recovering back
to the RUNNING state before the smoke test could catch the RECOVERING case (see
e.g. #4192 `test_managed_jobs_cancellation_gcp`). Change tests that manually
terminate a managed job instance, so that they will wait for the managed job to
change away from the RUNNING state, checking every 10s.

* address PR comments

* fix

tests/conftest.py

@@ -206,7 +206,7 @@ def enable_all_clouds(monkeypatch: pytest.MonkeyPatch) -> None:
 @pytest.fixture
 def aws_config_region(monkeypatch: pytest.MonkeyPatch) -> str:
     from sky import skypilot_config
-    region = 'us-west-2'
+    region = 'us-east-2'
     if skypilot_config.loaded():
         ssh_proxy_command = skypilot_config.get_nested(
             ('aws', 'ssh_proxy_command'), None)