[TEST] Invert dependency between :test-generator and :tests-common modules

This is needed to provide ability for declaring new implementations of
  test generators, based on existing infrastructure, which won't add
  dependency on :compiler:tests-common

Also this commit removes implicit dependency on :compiler:tests-common
  from :compiler:tests-common-new

compiler/tests-common/build.gradle.kts

@@ -45,6 +45,8 @@ dependencies {
     testCompile(project(":js:js.translator"))
     testCompile(project(":native:frontend.native"))
     testCompileOnly(project(":plugins:android-extensions-compiler"))
+    testApi(projectTests(":generators:test-generator"))
+    testCompile(projectTests(":compiler:tests-classic-compiler-utils"))
     testCompile(project(":kotlin-test:kotlin-test-jvm"))
     testCompile(projectTests(":compiler:tests-common-jvm6"))
     testCompile(project(":kotlin-scripting-compiler-impl"))