change to use __add__ operation instead ds.concat

Merge pull request !1167 from gengdongjie/master

Merge pull request !1102 from yangyongjie/master

Merge pull request !1151 from lyvette/master

Merge pull request !1130 from jiangjinsheng/flatten

Merge pull request !1156 from YuJianfeng/master

Merge pull request !1171 from fary86/adjust_onnx_related_uts

Merge pull request !1113 from dengwentao/rts

Merge pull request !1155 from fary86/fix_bug_of_log_interface

Merge pull request !1158 from SJN/master

Merge pull request !1163 from YuJianfeng/bn_fusion_with_cast

Merge pull request !1165 from zhoufeng/new-control-sink-entry

Merge pull request !1015 from candanzg/me_with_shape

1.GLOG_v can not control log level of MindData
2.Sub module ids of some source files under directory `kernel` and `device` are incorrect
3.GLOG_v can not control log level when using dlog

Merge pull request !1159 from guozhijian/add_nlp_preprocess_example

Merge pull request !1164 from liuxiao/BNInfer/BNUIferGrad-VM

Merge pull request !1026 from peixu_ren/custom_pp_ops

Signed-off-by: Nzhoufeng <zhoufeng54@huawei.com>

Merge pull request !1152 from Chong/support_squeeze_and_reduce

Merge pull request !1030 from liyong126/mindrecord_remove_dead_code

Merge pull request !1106 from ghzl/add-enable-dump-log-info

Merge pull request !1137 from wandongdong/master

Merge pull request !1147 from yihuaijie/master

Merge pull request !1154 from chenfei_mindspore/add-child-graph-to-kernel-graph

Merge pull request !1144 from guozhijian/fix_minddataset_distribute_param_check

Merge pull request !1132 from lianliguang/add-attr-op-pattern-to-kernel-build-info

Merge pull request !1080 from zhouyuanshen/master

Merge pull request !1153 from caifubi/setcontext-donot-change-loopsink

Merge pull request !1150 from VectorSL/gpu-update-shapeinfer