* Install java via native tools in CI
The VMR doesn't have Java installed globally on the machines, but it does have it in the native tool cache. This PR updates the build scripts to use the native tool cache to install Java in CI builds. I've also updated to 11.0.22 (vs. the .3 version from 2019) and the script used to pull this from native tool assets.
* Replace usages of $(CI) with $(ContinuousIntegrationBuild)
* Move RepoTasks to eng/tools/
* Remove dead code
* Update build.sh/ps1 to invoke Arcade instead of KoreBuild
* build/repo.props => eng/Build.props
* build/CodeSign.{props,targets} => eng/Signing.props
* build/repo.targets => eng/Build.props, eng/CodeGen.proj, and eng/AfterSolutionBuild.targets
* Remove AddAllProjectRefsToSolution.ps1
* Put selenium process tracking into artifacts/tmp/
* build/docker => eng/docker
* Move content from korebuild.json to global.json
* Remove cibuild.{sh,cmd} and update ci.yml
* Ensure vswhere detects BuildTools installations
* Remove sign check exclusions (Arcade does not support)
* list VS required components in global.json
* Update CodeCheck.ps1
* Update arcade (#11143)
* Fixups to broken build
* capture test results in xunit form
* attempt to fix code check
* restore before linux build
* remove duplicate signinfos
* More build fixes
* exclude node_modules from unique project check
* fixup signing props
* More build fixes
* Remove unused NoWarns
* Skip building site extension
* Suppress xunit color in console output
* Install x86 runtime
* Run KillProcesses.ps1 at end of build on CI
* activate env vars in codecheck.ps1
* Fix signing and generate build manifests
* Fixup code check and linux installers build
* Remove custom restore targets
* Import flaky test props
* Restore original manifest generation code and set warnAsErrors=false
* Alwasy restore the toolset
* More attempts at build fixes
* run restore before building deb/rpm packages
* pre-install Yarn.MSBuild
* Remove WIX workaround
* Attempt to fix RPM installers and x86 build
* Fix helix tests, java auto-detection, and code gen steps
* Globally disable MSBuild node resuse and capture MSbuild crash logs
* Cleanup build invocation for installers
* Set max time on xunit tests to 15 min
* Update helix-test.yml
* Fix Hosting tests
* Fix TestHost
* Fix Negotiate.Test
* Fix Mvc tests
* Capture results
* Fix Hosting tests
* Fix Kestrel tests
* Fix ServerComparison tests
* Fix DefaultBuilder functional tests
* Skip template tests
Need to run pack before running tests on mac/linux now
* Fix Identity test
* Fix ServerComparison tests
* Verify nginx installation on ubuntu
* Verify nginx installation?
* Try adding to path
* Try symlink
* Sudo?
* Woot it works
* Disable timeout
Template tests require more than 15 mins
* list env vars
* Use correct dotnet_home
* Prepent path instead
* Fix npmproj tests
* Fix CORS tests
* Debug signalr tests
* Debug signalr
* Capture bin
* Try building templates sequentially
* Debug signalr
* Cleanup
* Disable signalr npm tests
* Debug template test
* Try to fix templates again and make steps more reliable
* Cleanup
* Feedback