fix: (backport) fix Matcher understanding of tags

Author: fstagni

src/DIRAC/WorkloadManagementSystem/Client/Matcher.py

@@ -187,9 +187,17 @@ def _processResourceDescription(self, resourceDescription):
                 resourceDict[name] = resourceDescription[name]
 
         if resourceDescription.get("Tag"):
-            resourceDict["Tag"] = resourceDescription["Tag"]
+            tags = resourceDescription["Tag"]
+            resourceDict["Tag"] = (
+                tags if isinstance(tags, list) else list({tag.strip("\"'") for tag in tags.strip("[]").split(",")})
+            )
             if "RequiredTag" in resourceDescription:
-                resourceDict["RequiredTag"] = resourceDescription["RequiredTag"]
+                requiredTagsList = (
+                    resourceDescription["RequiredTag"].split(",")
+                    if isinstance(resourceDescription["RequiredTag"], str)
+                    else resourceDescription["RequiredTag"]
+                )
+                resourceDict["RequiredTag"] = requiredTagsList
 
         if "JobID" in resourceDescription:
             resourceDict["JobID"] = resourceDescription["JobID"]
@@ -224,6 +232,8 @@ def _processResourceDescription(self, resourceDescription):
 
         if "Tag" in resourceDict:
             resourceDict["Tag"] = list(set(resourceDict["Tag"]))
+        if "RequiredTag" in resourceDict:
+            resourceDict["RequiredTag"] = list(set(resourceDict["RequiredTag"]))
 
         for k in (
             "DIRACVersion",