test = develop, update API.spec

Make parent_idx a dispensable output for beam_search op to support models saved by older paddle version. (#16106)

test=develop

* Fix the node's sort issue when the graph is changed.

test=develop

* Clean code

test=develop

add if use static engine for trt
test=develop

test=develop

test=develop

update trt in  docker file
test=develop

test=develop

test=develop

1). add static trt load model
2). fix bug: when device_id is not 0, the trt will have a bug
test=develop

add simple static mode loading
test=develop

test=develop

1. bind trt input and output to fluid tensors

Make parent_idx a dispensable output for beam_search op to support models saved by older paddle version. (#16106)

test=develop

Add PaddleDType INT32 support

* Fix the node's sort issue when the graph is changed.

test=develop

* Clean code

test=develop

Four points for enhancing Paddle-TRT

add distribute fpn proposals op, test=develop

test=develop

add if use static engine for trt
test=develop

- Support setting attr in config
- Support setting dtype and initializer for input in config
test=develop

* polish the cast op doc

test=develop

* follow comments

test=develop

* fix api.spec

test=develop

test=develop

- Support setting attr in config
- Support setting dtype and initializer for input in config
test=develop

* polish the cast op doc

test=develop

* follow comments

test=develop

* fix api.spec

test=develop

* add parallel graph dist test=develop

* update test=develop

* update style test=develop