Set up GitHub Actions Workflow for Testing Parsl with Flux (#3159)

This pull request introduces a new GitHub Actions workflow aimed at testing Parsl's integration with Flux.

.github/workflows/parsl+flux.yaml

@@ -0,0 +1,47 @@
+name: Test Flux Scheduler
+on:
+  pull_request: []
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    permissions:
+      packages: read
+    strategy:
+      fail-fast: false
+      matrix:
+        container: ['fluxrm/flux-sched:jammy']
+    timeout-minutes: 30
+
+    container:
+      image: ${{ matrix.container }}
+      options: "--platform=linux/amd64 --user root -it --init"
+
+    name: ${{ matrix.container }}
+    steps:
+      - name: Make Space
+        run: |
+          rm -rf /usr/share/dotnet
+          rm -rf /opt/ghc
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Dependencies and Parsl
+        run: |
+          apt-get update && apt-get install -y python3-pip curl
+          pip3 install . -r test-requirements.txt
+
+      - name: Verify Parsl Installation
+        run: |
+          pytest parsl/tests/ -k "not cleannet and not unix_filesystem_permissions_required" --config parsl/tests/configs/local_threads.py --random-order --durations 10
+
+      - name: Start Flux and Test Parsl with Flux
+        run: |
+          flux start pytest parsl/tests/test_flux.py --config local  --random-order
+
+      - name: Test Parsl with Flux Config
+        run: |
+          flux start pytest parsl/tests/ -k "not cleannet and not unix_filesystem_permissions_required" --config parsl/tests/configs/flux_local.py --random-order --durations 10
+
+

Makefile

@@ -127,3 +127,8 @@ coverage: ## show the coverage report
 .PHONY: clean
 clean: ## clean up the environment by deleting the .venv, dist, eggs, mypy caches, coverage info, etc
 	rm -rf .venv $(DEPS) dist *.egg-info .mypy_cache build .pytest_cache .coverage runinfo $(WORKQUEUE_INSTALL)
+
+.PHONY: flux_local_test
+flux_local_test: ## Test Parsl with Flux Executor
+	pip3 install .
+	pytest parsl/tests/ -k "not cleannet" --config parsl/tests/configs/flux_local.py --random-order --durations 10

parsl/tests/configs/flux_local.py

@@ -0,0 +1,11 @@
+from parsl.config import Config
+from parsl.executors import FluxExecutor
+
+
+def fresh_config():
+    return Config(
+        executors=[FluxExecutor()],
+    )
+
+
+config = fresh_config()