cleanup backward compatibility broken in 1.8.3

[gsmolk]

In 1.8.2 cleanup() method always removed data directory, 1.8.3 removes data directory only in case of custom base path:

-        # choose directory to be removed
-        if testgres_config.node_cleanup_full:
-            rm_dir = self.base_dir    # everything
-        else:
-            rm_dir = self.data_dir    # just data, save logs
+        # only remove if base directory was temporary
+        if not self._custom_base_dir:
+            # choose directory to be removed
+            if testgres_config.node_cleanup_full:
+                rm_dir = self.base_dir    # everything
+            else:
+                rm_dir = self.data_dir    # just data, save logs
 
-        rmtree(rm_dir, ignore_errors=True)
+            rmtree(rm_dir, ignore_errors=True)

[arssher]

done in a3f6dd3