[MetaSchedule] Bug Fix for Relay Integration

[zxybazh]

This PR introduces 2 bug fixes:

1. The PrimFuncs are not lowered before sent to codegen after applying tuned ones from meta schedule.
2. The order of input output tensors for given PrimFunc was same as before lowering.

Thanks @sunggg @junrushao1994 for helping me debug and figure out the cause.

[masahi]

@zxybazh Can you remove the debug log at

tvm/src/meta_schedule/integration.cc

Line 145 in 085d36c

LOG(INFO) << "\n" << tir::AsTVMScript(func);

and

tvm/src/meta_schedule/integration.cc

Line 139 in 085d36c

LOG(INFO) << "Applied history best for: " << task_name;

?

[zxybazh]

Debug info removed and regression tests added.