Added Variance tests

compiler/testData/diagnostics/tests/variance/PrimaryConstructor.kt

@@ -0,0 +1,25 @@
+trait In<in T>
+trait Out<out T>
+trait Inv<T>
+
+fun <T> getT(): T = null!!
+
+class Test<in I, out O, P>(
+        val type1: <!TYPE_VARIANCE_CONFLICT(I; in; out; I)!>I<!>,
+        val type2: O,
+        val type3: P,
+        val type4: In<I>,
+        val type5: In<<!TYPE_VARIANCE_CONFLICT(O; out; in; In<O>)!>O<!>>,
+
+        var type6: <!TYPE_VARIANCE_CONFLICT(I; in; invariant; I)!>I<!>,
+        var type7: <!TYPE_VARIANCE_CONFLICT(O; out; invariant; O)!>O<!>,
+        var type8: P,
+        var type9: In<<!TYPE_VARIANCE_CONFLICT(I; in; invariant; In<I>)!>I<!>>,
+        var type0: In<<!TYPE_VARIANCE_CONFLICT(O; out; invariant; In<O>)!>O<!>>,
+
+        type11: I,
+        type12: O,
+        type13: P,
+        type14: In<I>,
+        type15: In<O>
+)