Set default jvmTarget when configuring Kotlin with Gradle

idea/testData/configuration/gradle/default_after.gradle

@@ -21,3 +21,13 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}

idea/testData/configuration/gradle/missedLibrary_after.gradle

@@ -23,4 +23,14 @@ sourceSets {
 }
 repositories {
     mavenCentral()
-}
+}
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}

idea/testData/configuration/gradle/plugin_present_after.gradle

@@ -24,3 +24,13 @@ sourceSets {
 repositories {
     mavenCentral()
 }
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}