FAB-2457 revert acl check in endorser

https://jira.hyperledger.org/browse/FAB-2457

Currently there is no means to specify the policy to use for
checking ACL for proposals. The default policy of > 50% admins
would not work for most situations (unlike the committer side
VSCC validations), especially dev/test situations.  Its more
reasonable to say "is this creator issuing proposal an admin"
as opposed to "are there >50% admins signing off on this
proposal".

In any case this needs to be revisited. Till then propose we
revert checkACL part of https://gerrit.hyperledger.org/r/#/c/6283/
to allow proposals through.

Change-Id: I1dce8edfb4676975923017e7cfbd374b47f8c598
Signed-off-by: Srinivasan Muralidharan <muralisr@us.ibm.com>

core/endorser/endorser.go

@@ -25,7 +25,6 @@ import (
 
 	"errors"
 
-	"github.com/hyperledger/fabric/common/policies"
 	"github.com/hyperledger/fabric/common/util"
 	"github.com/hyperledger/fabric/core/chaincode"
 	"github.com/hyperledger/fabric/core/chaincode/shim"
@@ -60,6 +59,7 @@ func NewEndorserServer() pb.EndorserServer {
 // we use the admins policy, whereas for normal chaincodes
 // we use the writers policy
 func (*Endorser) checkACL(signedProp *pb.SignedProposal, chdr *common.ChannelHeader, shdr *common.SignatureHeader, hdrext *pb.ChaincodeHeaderExtension) error {
+	/****** FAB-2457- we need to fix this right
 	// get policy manager to check ACLs
 	pm := peer.GetPolicyManager(chdr.ChannelId)
 	if pm == nil {
@@ -88,6 +88,7 @@ func (*Endorser) checkACL(signedProp *pb.SignedProposal, chdr *common.ChannelHea
 			chdr.ChannelId,
 			err)
 	}
+	**********/
 
 	return nil
 }

core/endorser/endorser_test.go

@@ -514,6 +514,8 @@ func TestDeployAndUpgrade(t *testing.T) {
 // the scenario in which the creator of this proposal is not among
 // the writers for the chain
 func TestWritersACLFail(t *testing.T) {
+	//skip pending FAB-2457 fix
+	t.Skip()
 	chainID := util.GetTestChainID()
 	var ctxt = context.Background()
 
@@ -578,6 +580,8 @@ func TestWritersACLFail(t *testing.T) {
 // the scenario in which the creator of this proposal is not among
 // the admins for the chain
 func TestAdminACLFail(t *testing.T) {
+	//skip pending FAB-2457 fix
+	t.Skip()
 	chainID := util.GetTestChainID()
 
 	// here we inject a reject policy for admins