[OLFG-865] Place mdtprc cookie with other session cookies

[daparkes]

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[platops-pr-bot]

• Config key auditing.traceRequests can be removed from conf/application.conf. It has been unused since play-auditing:3.0.0
• Config key metrics.name can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key metrics.rateUnit can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key metrics.durationUnit can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key metrics.showSamples can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key metrics.jvm can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key microservice.metrics.graphite.prefix can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key microservice.metrics.graphite.host can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key microservice.metrics.graphite.port can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key auditing.consumer.baseUri.host can be removed from conf/application.conf. This is already provided by Bootstrap
• Config key auditing.consumer.baseUri.port can be removed from conf/application.conf. This is already provided by Bootstrap