Use lazy API in ci_jobs

Author: sarahchen6

gradle/ci_jobs.gradle

@@ -142,9 +142,10 @@ def testAggregate(String baseTaskName, includePrefixes, excludePrefixes, boolean
     tasks.register(rootTaskName) { aggTest ->
       subprojects { subproject ->
         if (subproject.property("activePartition") && includePrefixes.any { subproject.path.startsWith(it) } && !excludePrefixes.any { subproject.path.startsWith(it) }) {
-          Task testTask = subproject.tasks.findByName(subProjTaskName)
+          def testTaskProvider = subproject.tasks.named(subProjTaskName)
           boolean isAffected = true
-          if (testTask != null) {
+          if (testTaskProvider.present) {
+            Task testTask = testTaskProvider.get()
             if (rootProject.useGitChanges) {
               final fileTrigger = isAffectedBy(testTask, rootProject.property("affectedProjects"))
               if (fileTrigger != null) {
@@ -155,16 +156,16 @@ def testAggregate(String baseTaskName, includePrefixes, excludePrefixes, boolean
               }
             }
             if (isAffected) {
-              aggTest.dependsOn(testTask)
+              aggTest.dependsOn(testTaskProvider)
             }
           }
           if (isAffected && coverage) {
-            def coverageTask = subproject.tasks.findByName("jacocoTestReport")
-            if (coverageTask != null) {
+            def coverageTask = subproject.tasks.named("jacocoTestReport")
+            if (coverageTask.present) {
               aggTest.dependsOn(coverageTask)
             }
-            coverageTask = subproject.tasks.findByName("jacocoTestCoverageVerification")
-            if (coverageTask != null) {
+            coverageTask = subproject.tasks.named("jacocoTestCoverageVerification")
+            if (coverageTask.present) {
               aggTest.dependsOn(coverageTask)
             }
           }