Separate pekko route from http server instrumentation #15499
Merged
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Resolves #15457
In play applications
org.apache.pekko.http.scaladsl.server.PathMatchermight be missing which causes muzzle to fail for the server instrumentation. This PR moves the virtual field used by the route instrumentation out fromPekkoHttpServerSingletonsthat is used by the server instrumentation so that server instrumentation could work even when the classes for route instrumentation are missing. This is a regression from indy conversion.