use dependency_names method in UCX-plugins easyblock

Author: boegel

easybuild/easyblocks/u/ucx_plugins.py

@@ -54,7 +54,7 @@ def plugins(self):
         """Property to determine list of plugins based on loaded dependencies, or return cached list of plugins."""
         if self._plugins is None:
             plugins = defaultdict(list)
-            dep_names = set(dep['name'] for dep in self.cfg.dependencies())
+            dep_names = cfg.dependency_names()
 
             if 'CUDAcore' in dep_names or 'CUDA' in dep_names:
                 for key in ('ucm', 'uct', 'ucx_perftest'):