esd-spack-installation: added clean up after each test

dedal/tests/integration_tests/spack_install_test.py

@@ -4,18 +4,18 @@ from esd.spack_manager.factory.SpackManagerBuildCache import SpackManagerBuildCa
 from esd.spack_manager.factory.SpackManagerScratch import SpackManagerScratch
 
 
+SPACK_VERSION = "0.22.0"
+
 # we need this test to run first so that spack is installed only once
 @pytest.mark.run(order=1)
 def test_spack_install_scratch():
     spack_manager = SpackManagerScratch()
-    spack_manager.install_spack(spack_version="v0.21.1")
+    spack_manager.install_spack(spack_version=f'v{SPACK_VERSION}')
     installed_spack_version = spack_manager.get_spack_installed_version()
-    required_version = "0.21.1"
-    assert required_version == installed_spack_version
+    assert SPACK_VERSION == installed_spack_version
 
 
 def test_spack_install_buildcache():
     spack_manager = SpackManagerBuildCache()
     installed_spack_version = spack_manager.get_spack_installed_version()
-    required_version = "0.21.1"
-    assert required_version == installed_spack_version
+    assert SPACK_VERSION == installed_spack_version