Change attributes names to be more consistent and reflect better meaning (#916)

* rename broadcast and multibroadcast output_lens attribute to out_lens attribute, and change tests and source code to reflect the same

* change the reshape attribute from dims to out_lens

* change transpose attribute's name from dims to perm to reflect better meaning

* use permutation instead of perm for transpose

clang formaating

* use dims instead of out_lens for reshape

clang formatting

test/verify/test_triadd2.cpp

@@ -16,7 +16,7 @@ struct test_triadd2 : verify_program<test_triadd2>
         auto y  = mm->add_parameter("y", s);
         auto z  = mm->add_parameter("z", b);
         auto zb = mm->add_instruction(
-            migraphx::make_op("broadcast", {{"axis", 1}, {"dims", s.lens()}}), z);
+            migraphx::make_op("broadcast", {{"axis", 1}, {"out_lens", s.lens()}}), z);
         auto sum = mm->add_instruction(migraphx::make_op("add"), x, y);
         mm->add_instruction(migraphx::make_op("add"), sum, zb);
         return p;

test/verify/test_triadd_broadcast.cpp

@@ -17,7 +17,7 @@ struct test_triadd_broadcast : verify_program<test_triadd_broadcast>
         auto y  = mm->add_parameter("y", {migraphx::shape::float_type, {2, 2}});
         auto z  = mm->add_parameter("z", {migraphx::shape::float_type, {2, 2, 3}});
         auto by = mm->add_instruction(
-            migraphx::make_op("broadcast", {{"axis", 0}, {"dims", x->get_shape().lens()}}), y);
+            migraphx::make_op("broadcast", {{"axis", 0}, {"out_lens", x->get_shape().lens()}}), y);
         auto sum = mm->add_instruction(migraphx::make_op("add"), x, by);
         mm->add_instruction(migraphx::make_op("add"), sum, z);
         return p;