Do not fail build on TC when some tests fail, just report problem

Required to have green builds with failing tests muted.

build.gradle.kts

@@ -217,6 +217,7 @@ fun Task.listConfigurationContents(configName: String) {
 
 val defaultJvmTarget = "1.8"
 val defaultJavaHome = jdkPath(defaultJvmTarget!!)
+val ignoreTestFailures by extra(project.findProperty("ignoreTestFailures")?.toString()?.toBoolean() ?: project.hasProperty("teamcity"))
 
 allprojects {
 
@@ -252,6 +253,10 @@ allprojects {
         }
     }
 
+    tasks.withType(VerificationTask::class.java as Class<Task>) {
+        (this as VerificationTask).ignoreFailures = ignoreTestFailures
+    }
+
     tasks.withType<Javadoc> {
         enabled = false
     }

buildSrc/src/main/kotlin/tasks.kt

@@ -47,7 +47,6 @@ fun Project.projectTest(taskName: String = "test", body: Test.() -> Unit = {}):
     environment("PROJECT_CLASSES_DIRS", the<JavaPluginConvention>().sourceSets.getByName("test").output.classesDirs.asPath)
     environment("PROJECT_BUILD_DIR", buildDir)
     systemProperty("jps.kotlin.home", rootProject.extra["distKotlinHomeDir"])
-    ignoreFailures = System.getenv("kotlin_build_ignore_test_failures")?.let { it == "yes" } ?: false
     body()
 }
 

libraries/stdlib/js/build.gradle

@@ -291,6 +291,7 @@ karma {
 
 karmaGenerateConfig.outputs.upToDateWhen { false }
 karmaRun {
+    ignoreExitValue = Boolean.valueOf(ignoreTestFailures)
     dependsOn testClasses
     dependsOn tasks.getByPath(':kotlin-test:kotlin-test-js:testClasses')
 }