CI: Fix path to requirements

.gitlab-ci.yml

@@ -2,7 +2,7 @@ py27_django18:
   script:
     - "virtualenv-2.7 ./py27_django18"
     - "source ./py27_django18/bin/activate"
-    - "pip install -r tests/tests/requirements-common.txt -U"
+    - "pip install -r ./tests/requirements-common.txt -U"
     - "pip install -U 'Django>=1.8,<1.9'"
     - "python ./runtests.py"
 
@@ -18,7 +18,7 @@ py34_django18:
   script:
     - "virtualenv-3.4 ./py34_django18"
     - "source ./py34_django18/bin/activate"
-    - "pip install -r tests/tests/requirements-common.txt -U"
+    - "pip install -r ./tests/requirements-common.txt -U"
     - "pip install -U 'Django>=1.8,<1.9'"
     - "python ./runtests.py"
 
@@ -26,7 +26,7 @@ py34_django19:
   script:
     - "virtualenv-3.4 ./py34_django19"
     - "source ./py34_django19/bin/activate"
-    - "pip install -r tests/tests/requirements-common.txt -U"
+    - "pip install -r ./tests/requirements-common.txt -U"
     - "pip install -U 'Django>=1.9,<1.10'"
     - "python ./runtests.py"