1.6.36

• Automated: Update REPO_SUFFIX to 20200604-1 and release 1.6.36
• Automated: Update REPO_SUFFIX to 20200513-1 and bump versions for future releases. (#264)
• Bundle fluent-plugin-concat plugin into the package to deal with Docker log split issue. (#260)
• Upgrade fluent-plugin-kubernetes_metadata_filter gem to 2.4.6. (#263)
• Auto-approve PRs from 'stackdriver-instrumentation-release'. (#262)