Attempt to configure CircleCI for integration tests

.circleci/config.yml

@@ -29,6 +29,7 @@ workflows:
       - "lint"
       - "deprecations"
       - "c-locale"
+      - "integration"
 
 jobs:
   lint:
@@ -198,6 +199,34 @@ jobs:
       TAHOE_LAFS_WARNINGS_LOG: "/tmp/artifacts/deprecation-warnings.log"
 
 
+  integration:
+    <<: *DEBIAN
+
+    environment:
+      <<: *UTF_8_ENVIRONMENT
+      # Select the integration tests tox environments.
+      TAHOE_LAFS_TOX_ENVIRONMENT: "integration"
+
+    steps:
+      # DRY, YAML-style.  See the debian-9 steps.
+      - run: *INSTALL_GIT
+      - "checkout"
+      - run: *BOOTSTRAP_TEST_ENVIRONMENT
+      - restore_cache: *RESTORE_HTTP_CACHE
+      - restore_cache: *RESTORE_WHEELHOUSE
+      - run: *SETUP_VIRTUALENV
+      - run:
+          name: "Install Tor"
+          command: |
+            integration/install-tor.sh
+      - save_cache: *SAVE_HTTP_CACHE
+      - save_cache: *SAVE_WHEELHOUSE
+      - run: *RUN_TESTS
+      - store_test_results: *STORE_TEST_LOG
+      - store_artifacts: *STORE_OTHER_ARTIFACTS
+      - run: *SUBMIT_COVERAGE
+
+
   ubuntu-16.04:
     <<: *DEBIAN
     docker: