Re-enable disabled INTERPRETER tests (#2093)

* Re-enable INTERPRETER tests which already seem to work

* Update INTERPRETER to be aware of TopK's unusual output element type arrangement; re-enable INTERPRETER.topk_int64

src/ngraph/runtime/interpreter/int_backend.cpp

@@ -205,7 +205,8 @@ bool runtime::interpreter::INTBackend::call(shared_ptr<Function> function,
             // Select has bool for first input and the type we are interested in for the second
             type = op->get_input_element_type(1);
             break;
-        default: type = op->get_outputs().at(0).get_element_type(); break;
+        case OP_TYPEID::TopK: type = op->get_output_element_type(1); break;
+        default: type = op->get_output_element_type(0); break;
         }
 #pragma GCC diagnostic pop
 

src/ngraph/runtime/interpreter/unit_test.manifest

-argmin_4D_axis_3_i64
 batchnorm_bprop_n4c3h2w2
 batchnorm_fprop_b1c2h2w2
 batchnorm_fprop_b2c2h2w1
@@ -6,7 +5,3 @@ batchnorm_fprop_globalstats_b2c2w2h1
 batchnorm_fprop_inference_b2c2h2w1
 batchnorm_fprop_bprop
 batchnorm_fprop_bprop_2step
-computation_reuse
-topk_int64
-topk_3d_large_input_max
-topk_3d_large_input_min