added travis_retry to nom tests

.travis.yml

@@ -62,10 +62,10 @@ before_script:
 - mongo --eval 'rs.status()'
 - mongo meteor --eval 'db.getCollectionNames()'
 script:
-- npm test
+- travis_retry npm test
 - mongo meteor --eval 'db.dropDatabase()'
 - unset MONGO_OPLOG_URL
-- npm test
+- travis_retry npm test
 before_deploy:
 - source ".travis/setartname.sh"
 - source ".travis/setdeploydir.sh"