[sonic-utilities] Fix show vnet [neighbors | routes [all | tunnel]] c…

…rashed issue (sonic-net#1263)

When query "NEIGH_TABLE*" or "VNET_ROUTE_TUNNEL_TABLE*" from APPDB,
it may contain a combination of table names with and without ":"

This PR shall skip handling the below entries in APP_DB:

127.0.0.1:6379> keys NEIGH_TABLE*

"NEIGH_TABLE_DEL_SET"
"NEIGH_TABLE_KEY_SET"

show/main.py

@@ -2291,7 +2291,7 @@ def neighbors():
  appl_db.connect(appl_db.APPL_DB)
 
  # Fetching data from appl_db for neighbors
- nbrs = appl_db.keys(appl_db.APPL_DB, "NEIGH_TABLE*")
+ nbrs = appl_db.keys(appl_db.APPL_DB, "NEIGH_TABLE:*")
  nbrs_data = {}
  for nbr in nbrs if nbrs else []:
  tbl, intf, ip = nbr.split(":", 2)
@@ -2331,7 +2331,7 @@ def all():
  header = ['vnet name', 'prefix', 'nexthop', 'interface']
 
  # Fetching data from appl_db for VNET ROUTES
- vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TABLE*")
+ vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TABLE:*")
  vnet_rt_keys = natsorted(vnet_rt_keys) if vnet_rt_keys else []
 
  table = []
@@ -2350,7 +2350,7 @@ def all():
  header = ['vnet name', 'prefix', 'endpoint', 'mac address', 'vni']
 
  # Fetching data from appl_db for VNET TUNNEL ROUTES
- vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TUNNEL_TABLE*")
+ vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TUNNEL_TABLE:*")
  vnet_rt_keys = natsorted(vnet_rt_keys) if vnet_rt_keys else []
 
  table = []
@@ -2374,7 +2374,7 @@ def tunnel():
  header = ['vnet name', 'prefix', 'endpoint', 'mac address', 'vni']
 
  # Fetching data from appl_db for VNET TUNNEL ROUTES
- vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TUNNEL_TABLE*")
+ vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TUNNEL_TABLE:*")
  vnet_rt_keys = natsorted(vnet_rt_keys) if vnet_rt_keys else []
 
  table = []