Change default scheme to neo4j

Also fix driver logging config

Author: bigmontz

packages/benchkit-backend/src/config.js

@@ -4,7 +4,7 @@ export default {
   username: process.env.TEST_NEO4J_USER || 'neo4j',
   password: process.env.TEST_NEO4J_PASS || 'password',
   hostname: process.env.TEST_NEO4J_HOST || 'localhost',
-  scheme: process.env.TEST_NEO4J_SCHEME || 'bolt',
+  scheme: process.env.TEST_NEO4J_SCHEME || 'neo4j',
   boltPort: process.env.TEST_NEO4J_BOLT_PORT || 7687,
   logLevel: process.env.TEST_NEO4J_LOG_LEVEL,
   workloadRoute: '/workload'

packages/benchkit-backend/src/index.js

@@ -6,7 +6,7 @@ import WorkloadRouter from './workload.router'
 
 const neo4jUrl = `${config.scheme}://${config.hostname}:${config.boltPort}`
 const driver = neo4j.driver(neo4jUrl, neo4j.auth.basic(config.username, config.password), {
-  logging: neo4j.logging.console(config.logLevel)
+  logging: config.logLevel != null ? neo4j.logging.console(config.logLevel) : undefined
 })
 const executor = WorkloadExecutor(driver)