[agent_dotnet] Add support for enabling distributed tracing on the newrelic.config.erb template

[scrthq]

This is primarily focused on the dotnet agent, but I'm also not seeing this newer functionality in anywhere in the repo, so I'm assuming that it's not supported in this cookbook at all yet. Pics/references will be using the .NET Agent as the example.

What needs to happen:

• Add the following line to the newrelic.config.erb template under the main configuration element:

  <distributedTracing enabled="<%= @resource.distributed_tracing_enabled %>" />

• Add the additional attribute 'distributed_tracing_enabled' to the agent_dotnet.rb custom resource:

attribute :distributed_tracing_enabled, :kind_of => [TrueClass, FalseClass], :default => false

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Image showing the config setting from the .NET agent documentation (click the image to view the doc page directly):

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Pull request with code changes: Add Distributed Tracing support for the .NET Agent #380

[djoos]

Fixed in #380