[counter] Fix issue: non default counters will be delayed forever aft…

…er fastboot (#10413)

- Why I did it
Fastboot will delay all counters in CONFIG DB, it relies on enable_counters.py to recover the delayed counters. However, enable_counters.py does not recover those non-default counters.

- How I did it
For non-default counters, if it is in CONFIG DB, put delay status to false after the waiting.

- How to verify it
Manual test

dockers/docker-orchagent/enable_counters.py

@@ -38,16 +38,18 @@ def enable_rates():
 def enable_counters():
     db = swsssdk.ConfigDBConnector()
     db.connect()
-    enable_counter_group(db, 'PORT')
-    enable_counter_group(db, 'RIF')
-    enable_counter_group(db, 'QUEUE')
-    enable_counter_group(db, 'PFCWD')
-    enable_counter_group(db, 'PG_WATERMARK')
-    enable_counter_group(db, 'PG_DROP')
-    enable_counter_group(db, 'QUEUE_WATERMARK')
-    enable_counter_group(db, 'BUFFER_POOL_WATERMARK')
-    enable_counter_group(db, 'PORT_BUFFER_DROP')
-    enable_counter_group(db, 'ACL')
+    default_enabled_counters = ['PORT', 'RIF', 'QUEUE', 'PFCWD', 'PG_WATERMARK', 'PG_DROP', 
+                                'QUEUE_WATERMARK', 'BUFFER_POOL_WATERMARK', 'PORT_BUFFER_DROP', 'ACL']
+
+    # Enable those default counters
+    for key in default_enabled_counters:
+        enable_counter_group(db, key)
+
+    # Set FLEX_COUNTER_DELAY_STATUS to false for those non-default counters
+    keys = db.get_keys('FLEX_COUNTER_TABLE')
+    for key in keys:
+        if key not in default_enabled_counters:
+            enable_counter_group(db, key)
     enable_rates()