fix OpenSearch CREODIAS test (#906)

* fix OpenSearch CREODIAS test
* fix flake8

Author: tomkralidis

owslib/wmts.py

@@ -816,7 +816,7 @@ def __init__(self, elem, parent=None, index=0, parse_remote_metadata=False):
 
             values = [f.text for f in dim.findall(_DIMENSION_VALUE_TAG)]
             if len(values) == 0:
-                 raise ValueError(
+                raise ValueError(
                     '%s list of values can not be empty' % (dim,)
                 )
             dimension['values'] = values

tests/test_opensearch_creodias.py

@@ -19,7 +19,7 @@ def test_opensearch_creodias():
     assert o.description.description == 'Sentinel-1 Collection'
     assert o.description.language == 'en'
 
-    assert len(o.description.urls) == 2
+    assert len(o.description.urls) == 1
 
     assert len(o.description.urls['application/json']['parameters']) > 0