Switch from akka.discovery.method

to akka.management.cluster.bootstrap.contact-point-discovery.discovery-method.

Fixes #173
Ref akka/akka-management#316

This was tested using the integration testing on reactive-lib lightbend/reactive-lib#106

Author: eed3si9n

cli/shared/src/main/scala/com/lightbend/rp/reactivecli/runtime/kubernetes/PodTemplate.scala

@@ -78,7 +78,7 @@ object PodTemplate {
         Map(
           "RP_JAVA_OPTS" -> LiteralEnvironmentVariable(
             Seq(
-              s"-Dakka.discovery.method=kubernetes-api",
+              s"-Dakka.management.cluster.bootstrap.contact-point-discovery.discovery-method=kubernetes-api",
               s"-Dakka.management.cluster.bootstrap.contact-point-discovery.effective-name=$serviceResourceName",
               s"-Dakka.management.cluster.bootstrap.contact-point-discovery.required-contact-point-nr=$noOfReplicas",
               akkaClusterBootstrapSystemName.fold("-Dakka.discovery.kubernetes-api.pod-label-selector=appName=%s")(systemName => s"-Dakka.discovery.kubernetes-api.pod-label-selector=actorSystemName=$systemName"),

cli/shared/src/main/scala/com/lightbend/rp/reactivecli/runtime/marathon/RpEnvironmentVariables.scala

@@ -57,7 +57,7 @@ object RpEnvironmentVariables {
     else
       Map(
         "RP_JAVA_OPTS" -> Seq(
-          s"-Dakka.discovery.method=marathon-api",
+          s"-Dakka.management.cluster.bootstrap.contact-point-discovery.discovery-method=marathon-api",
           s"-Dakka.management.cluster.bootstrap.contact-point-discovery.effective-name=$serviceResourceName",
           s"-Dakka.management.cluster.bootstrap.contact-point-discovery.required-contact-point-nr=$noOfReplicas",
           akkaClusterBootstrapSystemName.fold("-Dakka.discovery.marathon-api.app-label-query=APP_NAME==%s")(systemName => s"-Dakka.discovery.marathon-api.app-label-query=ACTOR_SYSTEM_NAME==$systemName"),

cli/shared/src/test/scala/com/lightbend/rp/reactivecli/runtime/marathon/RpEnvironmentVariablesTest.scala

@@ -109,7 +109,7 @@ object RpEnvironmentVariablesTest extends TestSuite {
         Map(
           "RP_ENDPOINT_0_BIND_PORT" -> "$PORT_EP",
           "RP_ENDPOINTS" -> "EP1", "RP_APP_VERSION" -> "3.2.1-SNAPSHOT",
-          "RP_JAVA_OPTS" -> "-Dakka.discovery.method=marathon-api -Dakka.management.cluster.bootstrap.contact-point-discovery.effective-name=friendimpl -Dakka.management.cluster.bootstrap.contact-point-discovery.required-contact-point-nr=3 -Dakka.discovery.marathon-api.app-label-query=APP_NAME==%s",
+          "RP_JAVA_OPTS" -> "-Dakka.management.cluster.bootstrap.contact-point-discovery.discovery-method=marathon-api -Dakka.management.cluster.bootstrap.contact-point-discovery.effective-name=friendimpl -Dakka.management.cluster.bootstrap.contact-point-discovery.required-contact-point-nr=3 -Dakka.discovery.marathon-api.app-label-query=APP_NAME==%s",
           "RP_PLATFORM" -> "mesos",
           "RP_ENDPOINT_EP1_PORT" -> "$PORT_EP",
           "RP_MODULES" -> "akka-cluster-bootstrapping",