uWSGI plugin config changes.

uWGI was generating warnings about being unable to find plugin files we
specify. To fix this, I've added uwsgi-python3 to the list of Alpine
packages we install in the container specified the plugins directory in
the uWSGI config. The updated uWSGI ConfigMap has been applied to the
staging cluster, which eliminated the warning about the logfile plugin.
The remaining warning about the python3 plugin will be eliminated once
the new container built by this branch is deployed.

Dockerfile

@@ -73,7 +73,8 @@ RUN apk update && \
       postgresql-client \
       postgresql-dev \
       postgresql-libs \
-      uwsgi-logfile
+      uwsgi-logfile \
+      uwsgi-python3
 
 COPY --from=builder /install/.venv/ ./.venv/
 COPY --from=builder /install/alembic/ ./alembic/

deploy/azure/uwsgi-config.yml

@@ -10,6 +10,7 @@ data:
     callable = app
     module = app
     socket = /var/run/uwsgi/uwsgi.socket
+    plugins-dir = /usr/lib/uwsgi
     plugin = python3
     plugin = logfile
     virtualenv = /opt/atat/atst/.venv

uwsgi.ini

@@ -2,6 +2,7 @@
 callable = app
 module = app
 socket = /var/run/uwsgi/uwsgi.socket
+plugins-dir = /usr/lib/uwsgi
 plugin = python3
 plugin = logfile
 virtualenv = /opt/atat/atst/.venv