Merge pull request !187 from chentingting/refactor_OperatorCostPtr_in_OperatorInfo

Merge pull request !198 from biffex/momentum-duplicate-mul-constant

Merge pull request !185 from jinyaohui/master

Merge pull request !177 from yao_yf/fix_auto_parallel_prelu

Merge pull request !172 from kisnwang/add-resource-manager

Merge pull request !168 from Alexey_Shevlyakov/remove_mindspore_make_unique

Merge pull request !99 from zhangbuxue/Dock_MaxPoolWithArgMax

Merge pull request !174 from guozhijian/fix_false_error_info

Merge pull request !20 from jinyaohui/master

Merge pull request !143 from liuxiao/temp

Merge pull request !149 from yoonlee666/master

fix pylint

use scalar_lt primitive directly

fix review

use unpack graph primitive instead

add testcases for all grad interface

remove debug log

format code

remove dumpfuncgraph

resolve clang-format

resolve reviews

resolve cpplint

fix review

Signed-off-by: Cathy Wong <cathy.wong@huawei.com>