[FAB-16619] Fix the policy warning

This fixes #FAB-16619

Change-Id: I251d10bc9dc9baf4f7e7d20cc11a34703baffc52
Signed-off-by: bjzhang03 <bjzhang03@foxmail.com>
(cherry picked from commit 7e8edb3)

first-network/org3-artifacts/configtx.yaml

@@ -23,6 +23,20 @@ Organizations:
 
  MSPDir: crypto-config/peerOrganizations/org3.example.com/msp
 
+ # Policies defines the set of policies at this level of the config tree
+ # For organization policies, their canonical path is usually
+ # /Channel/<Application|Orderer>/<OrgName>/<PolicyName>
+ Policies:
+ Readers:
+ Type: Signature
+ Rule: "OR('Org3MSP.admin', 'Org3MSP.peer', 'Org3MSP.client')"
+ Writers:
+ Type: Signature
+ Rule: "OR('Org3MSP.admin', 'Org3MSP.client')"
+ Admins:
+ Type: Signature
+ Rule: "OR('Org3MSP.admin')"
+
  AnchorPeers:
  # AnchorPeers defines the location of peers which can be used
  # for cross org gossip communication. Note, this value is only