Fix resources clashes in ultimate plugin tests

Rollback tests-jar configuration to extend testCompile instead of testRuntime.
Otherwise an unwanted main artifact from the runtime configuration gets added to the
artifacts of tests-jar configuration.

Exclude transitive dependencies of projectTests(":idea")

buildSrc/src/main/kotlin/artifacts.kt

@@ -37,7 +37,7 @@ fun Project.classesDirsArtifact(): FileCollection {
 }
 
 fun Project.testsJar(body: Jar.() -> Unit = {}): Jar {
-    val testsJarCfg = configurations.getOrCreate("tests-jar").extendsFrom(configurations["testRuntime"])
+    val testsJarCfg = configurations.getOrCreate("tests-jar").extendsFrom(configurations["testCompile"])
 
     return task<Jar>("testsJar") {
         dependsOn("testClasses")

ultimate/build.gradle.kts

@@ -58,7 +58,7 @@ dependencies {
     testCompile(project(":plugins:lint")) { isTransitive = false }
     testCompile(project(":idea:idea-jvm")) { isTransitive = false }
     testCompile(projectTests(":compiler:tests-common"))
-    testCompile(projectTests(":idea"))
+    testCompile(projectTests(":idea")) { isTransitive = false }
     testCompile(projectTests(":generators:test-generator"))
     testCompile(commonDep("junit:junit"))
     testCompile(ideaUltimateSdkDeps("gson"))