Add a profile that configures test fixtures

This commit enables users to spin up the fixtures container locally.
Besides that, a default environment variable for the fixtures is set
in order to allow running tests without the pulp-smash settings file.

[noissue]

base/container_scripts/configure_pulp_smash.sh

@@ -38,6 +38,9 @@ cat > /opt/settings/pulp_smash/settings.json <<EOF
     ],
     "selinux enabled": false,
     "version": "3"
+  },
+  "custom": {
+    "fixtures_origin": "${REMOTE_FIXTURES_ORIGIN}"
   }
 }
 EOF

client/oci_env/utils.py

@@ -64,6 +64,9 @@ def get_config(env_file):
         "DJANGO_SUPERUSER_USERNAME": "admin",
         "DJANGO_SUPERUSER_PASSWORD": "password",
 
+        # Test fixtures
+        "REMOTE_FIXTURES_ORIGIN": "https://fixtures.pulpproject.org/",
+
         # API URL
         "API_PROTOCOL": "http",
         "API_HOST": "localhost",

profiles/local_fixtures/README.md

@@ -0,0 +1,15 @@
+# local\_fixtures
+
+A profile for running test fixtures locally. It pulls down the pulp/pulp-fixtures image which
+can be used for running functional tests without relying on the internet connection. The fixtures
+are exposed on the very same port on the host machine.
+
+## Usage
+
+Append `local_fixtures` to the `COMPOSE_PROFILE` variable in your `compose.env`.
+
+## Extra Variables
+
+- `PULP_FIXTURES_URL`
+    - Description: The URL/origin for the test fixtures endpoint.
+    - Default: "http://local\_fixtures:8080"

profiles/local_fixtures/compose.yaml

@@ -0,0 +1,9 @@
+version: "3.7"
+
+services:
+  local_fixtures:
+    image: pulp/pulp-fixtures
+    environment:
+      - BASE_URL={PULP_FIXTURES_URL}
+    ports:
+      - {PULP_FIXTURES_PORT}:{PULP_FIXTURES_PORT}

profiles/local_fixtures/profile_default_config.env

@@ -0,0 +1,2 @@
+PULP_FIXTURES_PORT=8080
+PULP_FIXTURES_URL=http://local_fixtures:8080

profiles/local_fixtures/pulp_config.env

@@ -0,0 +1 @@
+REMOTE_FIXTURES_ORIGIN={PULP_FIXTURES_URL}