[FAB-4906] sed error in generateArtifacts.sh

generateArtifacts.sh does not work at 2nd time. Due to generating
a private key every time, if we execute generateArtifacts.sh more
than once, the command to get the private key will return more
than one result. However, we do not expect this result.
This patch set adds checking code of the existence of crypto-config
dir at the beginning.

Change-Id: Ie9249556c1988e30463683f688e4e50dc75d7b15
Signed-off-by: Nao Nishijima <nao.nishijima@hal.hitachi.com>

examples/e2e_cli/network_setup.sh

@@ -52,9 +52,13 @@ function removeUnwantedImages() {
 }
 
 function networkUp () {
-    #Generate all the artifacts that includes org certs, orderer genesis block,
-    # channel configuration transaction
-    source generateArtifacts.sh $CH_NAME
+    if [ -f "./crypto-config" ]; then
+      echo "crypto-config directory already exists."
+    else
+      #Generate all the artifacts that includes org certs, orderer genesis block,
+      # channel configuration transaction
+      source generateArtifacts.sh $CH_NAME
+    fi
 
     if [ "${IF_COUCHDB}" == "couchdb" ]; then
       CHANNEL_NAME=$CH_NAME TIMEOUT=$CLI_TIMEOUT docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_COUCH up -d 2>&1