added rucio-clients from github master branch

Author: fstagni

.github/workflows/basic-python3.yml

@@ -20,7 +20,7 @@ jobs:
           #   * `test_BaseType_Unicode` and `test_nestedStructure` fail due to
           #     DISET's string and unicode types being poorly defined
           - pytest --runslow -k 'not test_BaseType_Unicode and not test_nestedStructure'
-          - pylint -E src/ --rcfile=.pylintrc
+          - pylint -E src/
 
     steps:
     - uses: actions/checkout@v2

environment-py3.yml

@@ -93,3 +93,4 @@ dependencies:
     - git+https://gitlab.cern.ch/cburr/fts-rest.git@python3
     # Doesn't support Python 3.9
     # - rucio-clients >=1.25.6
+    - git+https://github.com/rucio/rucio.git@master