[FAB-3550] Configure orderers ROOT CAs properly

The configuration of the orderer's root CAs was
commented out.  Now reinstated.

Still do NOT expect this behave to pass as there will
be a subsequent CR to modify the role used for
instantiation to accomodate most recent changes to
instantiation policy endorsement in peer.

Change-Id: I7da385c9f9af3b0fb81c8b89296595a51d814cc4
Signed-off-by: Jeff Garratt <garratt.jeff@gmail.com>

bddtests/steps/bootstrap_util.py

@@ -958,8 +958,8 @@ def getEnv(self, composition, context, env):
             (keyPath, certPath) = self.getTLSKeyPaths(pnt=pnt, composition=composition, compose_service=ordererService, pathType=PathType.Container)
             env["{0}_ORDERER_GENERAL_TLS_CERTIFICATE".format(ordererService.upper())] = certPath
             env["{0}_ORDERER_GENERAL_TLS_PRIVATEKEY".format(ordererService.upper())] = keyPath
-            # env["{0}_ORDERER_GENERAL_TLS_ROOTCAS".format(ordererService.upper())] = "[{0}]".format(self.getLocalMspConfigRootCertPath(
-            #     directory=directory, composition=composition, compose_service=ordererService, pathType=PathType.Container))
+            env["{0}_ORDERER_GENERAL_TLS_ROOTCAS".format(ordererService.upper())] = "[{0}]".format(self.getLocalMspConfigRootCertPath(
+                directory=directory, composition=composition, compose_service=ordererService, pathType=PathType.Container))
 
 class PeerCompositionCallback(compose.CompositionCallback, CallbackHelper):
     'Responsible for setting up Peer nodes upon composition'