[gui-test] add SystemProperties annotation

platform/testGuiFramework/src/com/intellij/testGuiFramework/framework/SystemProperties.kt

@@ -0,0 +1,15 @@
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.testGuiFramework.framework
+
+
+/**
+ * An annotation to provide custom system properties for a running instance of IDEA.
+ * It assumed to have a next usage:
+ * @code {
+ *  @SystemProperties(arrayOf("key1=value1", "key2=value2"))
+ *  SomeGuiTestClass
+ * }
+ */
+@kotlin.annotation.Retention(AnnotationRetention.RUNTIME)
+@kotlin.annotation.Target(AnnotationTarget.CLASS, AnnotationTarget.FILE)
+annotation class SystemProperties(val keyValueArray: Array<String>)