Update check_log patterns and its usage across trigger tests

Several changes concerning check_log are made:

• Reorganise pattern definitions in check_log.py
• Add some patterns to identify scheduler stalls (ATR-19950)
• Slightly improve traceback handling
• Fix ignore pattern parsing
• Make a note in perl check_log that it's deprecated and python version should be used instead
• Replace all use cases of perl check_log with python check_log, except for those in TrigInDetValidation

cc @smh

Trigger/TrigValidation/TrigValTools/bin/check_log.py

@@ -46,7 +46,6 @@ traceback = [
     'Traceback',
     'Shortened traceback',
     '^Algorithm stack',
-    'Thread .*0x',
     '^#\d+\s*0x\w+ in '
 ]
 
@@ -103,7 +102,9 @@ def parseConfig():
             print('Ignoring warnings/error patterns defined in ' + args.config)
             for aline in configFile:
                 if 'ignore' in aline:
-                  line = aline.strip('ignore').strip().strip("'")
+                  line = aline.strip('ignore').strip()
+                  if line.startswith('\'') and line.endswith('\''):
+                      line = line[1:-1]
                   ignorePattern.append(line)
         noConfig = False
     except: