Add LinuxX64 test

Author: lauzadis

runtime/runtime-core/linux/test/aws/smithy/kotlin/runtime/util/SystemPlatformProviderTestLinux.kt renamed to runtime/runtime-core/linuxX64/test/aws/smithy/kotlin/runtime/util/SystemPlatformProviderLinuxX64Test.kt

@@ -8,10 +8,15 @@ import kotlinx.coroutines.test.runTest
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
-class SystemPlatformProviderTestLinux {
+class SystemPlatformProviderLinuxX64Test {
     @Test
     fun testOsInfo() = runTest {
         val osInfo = PlatformProvider.System.osInfo()
         assertEquals(OsFamily.Linux, osInfo.family)
     }
+
+    @Test
+    fun definitelyShouldFail() = runTest {
+        assertEquals(1, 2)
+    }
 }