[green dragon] add stage1-RA job to release/22.x

.ci/green-dragon/clang-stage1-RA.groovy

@@ -0,0 +1,37 @@
+branchName = 'main'
+
+library identifier: "zorg-shared-lib@${branchName}",
+        retriever: modernSCM([
+            $class: 'GitSCMSource',
+            remote: "https://github.com/llvm/llvm-zorg.git",
+            credentialsId: scm.userRemoteConfigs[0].credentialsId
+        ])
+
+clangPipeline(
+    jobName: env.JOB_NAME,
+    zorgBranch: branchName,
+    buildConfig: [
+        stage: 1,
+        build_type: 'cmake',
+        cmake_type: 'RelWithDebInfo',
+        assertions: true,
+        projects: 'clang;clang-tools-extra',
+        runtimes: 'compiler-rt',
+        timeout: 120,
+        incremental: false,
+        skipTrigger: env.BRANCH_NAME?.startsWith('release/') ?: false
+    ],
+    testConfig: [
+        test_type: 'testlong',
+        timeout: 120,
+        junit_patterns: [
+            "clang-build/**/testresults.xunit.xml"
+        ]
+    ],
+    triggeredJobs: [
+        'llvm.org/clang-stage2-cmake-RgSan_relay',
+        'llvm.org/clang-stage2-Rthinlto_relay',
+        'llvm.org/relay-lnt-ctmark',
+        'llvm.org/relay-test-suite-verify-machineinstrs'
+    ]
+)