Http Client Metrics in Puppet Server

The master service in the status endpoint at debug level (/status/v1/services/master?level=debug) now includes an `http-client-metrics` key. The value of this is an array of http client metrics showing data about http requests that puppet server makes to other services - e.g. puppetdb and classifier. The output of the status endpoint with http client metrics looks like: "http-client-metrics": [   {     "aggregate": 407,     "count": 1,     "mean": 407,     "metric-id": [       "puppetdb",       "facts",       "find"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.facts.find.full-response"   },   {     "aggregate": 66,     "count": 1,     "mean": 66,     "metric-id": [       "puppetdb",       "command",       "replace_facts"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.command.replace_facts.full-response"   },   {     "aggregate": 60,     "count": 2,     "mean": 30,     "metric-id": [       "puppetdb",       "resource",       "search"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.resource.search.full-response"   },   {     "aggregate": 53,     "count": 1,     "mean": 53,     "metric-id": [       "puppetdb",       "query"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.query.full-response"   },   {     "aggregate": 22,     "count": 1,     "mean": 22,     "metric-id": [       "puppetdb",       "command",       "store_report"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.command.store_report.full-response"   },   {     "aggregate": 16,     "count": 1,     "mean": 16,     "metric-id": [       "puppetdb",       "command",       "replace_catalog"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppetdb.command.replace_catalog.full-response"   },   {     "aggregate": 2,     "count": 1,     "mean": 2,     "metric-id": [       "puppet",       "report",       "http"     ],     "metric-name": "puppetlabs.localhost.http-client.experimental.with-metric-id.puppet.report.http.full-response"   } ],