Fix skipif condition for test_cloud (#2084)

Author: kounelisagis

tiledb/tests/test_cloud.py

@@ -15,7 +15,10 @@
 
 
 @pytest.mark.skipif(
-    not os.getenv("CI") and tiledb_token is None,
+    os.getenv("CI") == None
+    or tiledb_token == None
+    or tiledb_namespace == None
+    or s3_bucket == None,
     reason="No token was provided in a non-CI environment. Please set the TILEDB_TOKEN environment variable to run this test.",
 )
 class CloudTest(DiskTestCase):