Rewrite MultiplatformProjectImportingTest to use testData directory

idea/testData/gradle/multiplatform/transitiveImplement/build.gradle

@@ -0,0 +1,53 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.51")
+    }
+}
+
+project('project1') {
+    apply plugin: 'kotlin-platform-common'
+
+    sourceSets {
+        custom
+    }
+}
+
+project('project2') {
+    repositories {
+        mavenCentral()
+    }
+
+    apply plugin: 'kotlin-platform-jvm'
+
+    sourceSets {
+        custom
+    }
+
+    dependencies {
+        implement project(':project1')
+    }
+}
+
+project('project3') {
+    repositories {
+        mavenCentral()
+    }
+
+    apply plugin: 'kotlin-platform-jvm'
+    apply plugin: 'kotlin'
+
+    sourceSets {
+        custom
+    }
+
+    dependencies {
+        compile project(':project2')
+        customCompile project(':project2')
+        testCompile(project(':project2').sourceSets.test.output)
+    }
+}
+        

idea/testData/gradle/multiplatform/transitiveImplement/settings.gradle

@@ -0,0 +1 @@
+include ':project1', ':project2', ':project3'