place: fix output of tags to be usable as input for set-tag

The input of set-tag command expects a list of key=value pairs space
seperated. This change makes the output of show command usable for
set-tag.

Author: sessl3r

labgrid/remote/common.py

@@ -187,7 +187,7 @@ def show(self, level=0):
         if self.comment:
             print(indent + f"comment: {self.comment}")
         if self.tags:
-            print(indent + f"tags: {', '.join(k + '=' + v for k, v in sorted(self.tags.items()))}")
+            print(indent + f"tags: {' '.join(k + '=' + v for k, v in sorted(self.tags.items()))}")
         print(indent + "matches:")
         for match in sorted(self.matches):
             print(indent + f"  {match}")