Update GitHub workflows

Author: bastonero

.github/workflows/python-testsuite.yml

@@ -13,28 +13,39 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
+  
     strategy:
       matrix:
         python-version: [3.8]
+    
+    services:
+      rabbitmq:
+          image: rabbitmq:latest
+          ports:
+          -   5672:5672
 
     steps:
     - uses: actions/checkout@v2
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
+        pip install flake8 pytest aiida-core aiida-quantumespresso
         if [ ${{matrix.python-version}} -eq 2.7 ]; then pip install -r requirements2.txt;
         else pip install -r requirements.txt; fi
+
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
     - name: Install
       run: |
         sudo apt-get update
@@ -45,9 +56,11 @@ jobs:
         cd ..
         
         python setup.py install --user
+
     - name: Test with pytest
+      env:
+        OMP_NUM_THREADS: 1
       run: |
-        export OMP_NUM_THREADS=1
         cd tests
         rm -rf __pycache__
         # Test excluding very long running tests

Modules/Relax.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from __future__ import print_function
+from __future__ import print_function, annotations
 
 """
 This module performs the relax over more