Frail implementation of WireMock commandline parameters

[JoakimJohesan]

Describe the bug

When running grpc-wiremock in kubernetes, certain environment variables will be added to the VM running gprc-wiremock. If a kubernetes service is defined with a name starting with wiremock, there will be a few env. variables passed through to the Wiremock HttpMock. (link) This results in the Wiremock HttpMock being unable to start - because of these invalid commandline parameters.

Is there a better way to handle the passing of wiremock commandline parameters?

To Reproduce
Steps to reproduce the behavior:

1. Set up grpc-wiremock to run in kuberenetes, create a kubernetes service with name wiremock-x-y in the same namespace.
2. Run kubernetes deployment of grpc-wiremock
3. See error:

2022-02-21 07:47:14.202  INFO 88 --- [           main] io.adven.grpc.wiremock.HttpMock          : Starting WireMock server with options:
--x_y_internal_port_8080_tcp=tcp://127.0.0.1:8080
--x_y_internal_port=tcp://127.0.0.1:8080
--x_y_internal_port_8080_tcp_addr=127.0.0.1
--x_y_internal_port_8080_tcp_port=8080
--x_y_internal_service_host=127.0.0.1
--x_y_internal_port_8080_tcp_proto=tcp
--x_y_internal_service_port=8080
--global-response-templating
--root-dir=/wiremock
--port=8888
2022-02-21 07:47:14.223  INFO 88 --- [           main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-02-21 07:47:14.316 ERROR 88 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalStateException: Failed to execute CommandLineRunner
        at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:770) ~[spring-boot-2.6.2.jar:2.6.2]
        at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:751) ~[spring-boot-2.6.2.jar:2.6.2]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:309) ~[spring-boot-2.6.2.jar:2.6.2]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.2.jar:2.6.2]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.2.jar:2.6.2]
        at io.adven.grpc.wiremock.GrpcWiremock.main(GrpcWiremock.java:132) ~[main/:na]
Caused by: joptsimple.UnrecognizedOptionException: psd2_sandbox_internal_port_8080_tcp is not a recognized option
        at joptsimple.OptionException.unrecognizedOption(OptionException.java:108) ~[wiremock-jre8-standalone-2.32.0.jar:na]
        at joptsimple.OptionParser.handleLongOptionToken(OptionParser.java:510) ~[wiremock-jre8-standalone-2.32.0.jar:na]
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:56) ~[wiremock-jre8-standalone-2.32.0.jar:na]
        at joptsimple.OptionParser.parse(OptionParser.java:396) ~[wiremock-jre8-standalone-2.32.0.jar:na]
        at com.github.tomakehurst.wiremock.standalone.CommandLineOptions.<init>(CommandLineOptions.java:342) ~[wiremock-jre8-standalone-2.32.0.jar:na]
        at io.adven.grpc.wiremock.HttpMock.start(HttpMock.java:44) ~[main/:na]
        at io.adven.grpc.wiremock.GrpcWiremock.run(GrpcWiremock.java:39) ~[main/:na]
        at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:767) ~[spring-boot-2.6.2.jar:2.6.2]
        ... 5 common frames omitted

2022-02-21 07:47:14.318  WARN 88 --- [           main] .s.c.a.CommonAnnotationBeanPostProcessor : Destroy method on bean with name 'httpMock' threw an exception: java.lang.NullPointerException: Cannot invoke "com.github.tomakehurst.wiremock.WireMockServer.stop()" because "this.server" is null


FAILURE: Build failed with an exception.

Expected behavior

grpc-wiremock should run.