Test

To prevent NPE use pool name for metrics if JDBC URL is not set. #2143

Job	Run time
Build	6m 50s
aerospike-scenario	11s
mysql-scenario	6s
undertow-scenario	2s
webflux-scenario	2s
zookeeper-scenario	3s
spring-3.1.x-scenario	3s
spring-4.1.x-scenario	3s
spring-4.3.x-scenario	3s
spring-async-scenario	4s
vertx-core-4.x-scenario	3s
vertx-eventbus-3.x-scenario	3s
vertx-web-3.54minus-scenario	7s
vertx-web-3.6plus-scenario	1s
mariadb-scenario	9s
micronaut-http-scenario	5s
nats-2.14.x-2.16.5-scenario	4s
quasar-scenario	5s
baidu-brpc-scenario	8s
baidu-brpc-3.x-scenario	11s
retransform-class-scenario	4s
retransform-class-tomcat-scenario	4s
graphql-8.x-scenario	10s
graphql-9.x-scenario	3s
graphql-16plus-scenario	5s
graphql-12.x-15.x-scenario	4s
hbase-scenario	5s
spring-kafka-1.3.x-scenario	4s
spring-kafka-2.2.x-scenario	3s
spring-kafka-2.3.x-scenario	4s
spring-scheduled-3.x-5.x-scenario	4s
elasticjob-2.x-scenario	6s
quartz-scheduler-2.x-scenario	6s
xxl-job-2.2.0-scenario	4s
xxl-job-2.3.x-scenario	5s
thrift-scenario	4s
dbcp-2.x-scenario	6s
jsonrpc4j-1.x-scenario	5s
gateway-3.x-scenario	4s
gateway-3.x-filter-context-scenario	1s
neo4j-4.x-scenario	5s
druid-1.x-scenario	6s
hikaricp-scenario	4s
clickhouse-0.3.1-scenario	6s
clickhouse-0.3.2.x-scenario	6s
kylin-jdbc-2.6.x-3.x-4.x-scenario	7s
undertow-worker-thread-pool-scenario	4s
tomcat-thread-pool-scenario	6s
guava-eventbus-scenario	5s
shenyu-2.4.x-scenario	6s
jdk-threadpool-scenario	5s
jdk-forkjoinpool-scenario	3s
shenyu-2.4.x-dubbo-scenario	6s
grpc-generic-call-scenario	5s
shenyu-2.4.x-grpc-scenario	6s
shenyu-2.4.x-sofarpc-scenario	6s
solon-2.x-scenario	6s
	11m 26s

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