fix: record left status in jenkins.queue.count metric and add queue metrics test#1271

kanagaabishek wants to merge 4 commits intojenkinsci:mainjenkinsci/opentelemetry-plugin:mainfrom

kanagaabishek:fix/queue-metrics-left-status-and-testkanagaabishek/opentelemetry-plugin:fix/queue-metrics-left-status-and-testCopy head branch name to clipboard