* add static_mode_white_list

* add Mac CI static list

* add Win CI white_list

* add Coverage and Py3 CI white_list, add test_unittest

* nccl init support hostname and ip; test=develop

* Add new api: is_tensor

* Add new api: is_tensor

* Add new api: is_tensor

* Add new api: is_tensor

* Add build paddle inference;test=document_fix

* Add build paddle inference;test=document_fix

* fix generate_proposal_labels in cascade-rcnn series model, test=develop

* fix example code & unittest, test=develop

* update code from review comments, test=develop

* fill_constant supports nan and inf

* add ut

* add pil backend

* refine code of DygraphToStaticAst

* add __init__ function

* add stack pool2d roi_align xpu op,test=kunlun

* error message opt, test=kunlun

* add xpu unittest,test=kunlun

* skip check grad,test=kunlun

* fix boostget , test=kunlun

* error message opt for XPU, test=kunlun

* add rois_num for roi_align xpu OP, test=develop

* cat exeception in request download; test=develop

* add re-try in download; test=develop

* fix dataloader

* Add zhhsplendid into PE approver, test=develop

* Fix /tab, space mix usage

* Add AVX512 instruction check for C-API

* Fix formatting

* lookup_table_v2_op_xpu report errors;test=kunlun

* lookup_table_v2_op_xpu report errors;test=kunlun

* lookup_table_xpu op report errors;test=kunlun

* add adam xpu op;test=kunlun

* reset lookup

* change adam wrong;test=kunlun

* hapi/model step learning rate on batch end. test=develop

* fix error message,test=kunlun

* fix, test=kunlun

Fix diag OP bug on Windows Python3.8 ，remove the std::min

fleet support paddle.optimzier

* bug fix

* fix fleet_base

* bug fix

* fix coverage

* add doc, test=document_fix

* transfer from paddle.fluid.layers.assign() into creation.py,test=develop

* fix ut fail,add support for paddle.assign,test=develop

* fix,test=develop

* fix UT coverage,test=coverage

* fix UT fail,test=coverage

* fix doc,test=develop