Peek Message does not work

When setting `pulsar.peek.message=true` in `/pulsar-manager/pulsar-manager/application.properties`, I still receive the following error:

This is mounted into the container on creation, **I've even tried restarting the manager within the container.** It seems to not take the setting. I am deploying using the [Helm chart](https://github.com/apache/pulsar-helm-chart) with some modifications:

I have confirmed inside the container that the properties are applied.
```shell
/pulsar-manager # cat pulsar-manager/application.properties | tail -n 2
# support peek message, default false
pulsar.peek.message=true
```

This is the command Pulsar Manager is being run with:
`/usr/lib/jvm/java-1.8-openjdk/jre/bin/java -Dlog4j2.formatMsgNoLookups=true -classpath /pulsar-manager/pulsar-manager/lib/pulsar-manager.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-starter-netflix-zuul-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-web-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/pagehelper-spring-boot-starter-1.2.4.jar:/pulsar-manager/pulsar-manager/lib/mybatis-spring-boot-starter-2.1.2.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-thymeleaf-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-security-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-json-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-netflix-zuul-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-starter-netflix-hystrix-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-starter-netflix-ribbon-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-starter-netflix-archaius-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-starter-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-actuator-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-jdbc-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-cloud-netflix-core-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-aop-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/spring-boot-starter-2.0.2.RELEASE.jar:/pulsar-manager/pulsar-manager/lib/pagehelper-5.1.11.jar:/pulsar-manager/pulsar-manager/lib/postgresql-42.2.5.jar:/pulsar-manager/pulsar-manager/lib/herddb-jdbc-0.19.0.jar:/pulsar-manager/pulsar-manager/lib/hibernate-validator-6.0.9.Final.jar:/pulsar-manager/pulsar-manager/lib/pulsar-broker-2.4.1.jar:/pulsar-manager/pulsar-manager/lib/bkvm-2.0.0-war-no-libs.war:/pulsar-manager/pulsar-manager/lib/bkvm-2.0.0-classes.jar:/pulsar-manager/pulsar-manager/lib/pulsar-websocket-2.4.1.jar:/pulsar-manager/pulsar-manager/lib`