[FAB-15601] BYFN: Fix MAX_RETRY for couchdb

CR31665 increased MAX_RETRY to 15 which allowed the fabcar go test
to succeed but the fabcar javascript test still fails. This sets
it to 20 in hope this will be enough.

Change-Id: I51a0e24893634d773b12341f5b87d49d2bbf7cb6
Signed-off-by: Arnaud J Le Hors <lehors@us.ibm.com>

first-network/scripts/script.sh

@@ -23,7 +23,7 @@ NO_CHAINCODE="$6"
 : ${NO_CHAINCODE:="false"}
 LANGUAGE=`echo "$LANGUAGE" | tr [:upper:] [:lower:]`
 COUNTER=1
-MAX_RETRY=15
+MAX_RETRY=20
 PACKAGE_ID=""
 
 if [ "$LANGUAGE" = "node" ]; then