BREAKING CHANGE:
支持setns接口对外变更:
1.新增setns接口

Close #I6D9Y0
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I9aacf9e5b8463e8e6c743a0041a5b2b18fdb0e12

1.proc存在静态问题
2.删除proc节点后，vnode未同步删除，导致系统崩溃

Close #I6BT1F
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I91deecfe1d055a4ad1c2d2cda65acf04e4c53d4c

BREAKING CHANGE:
支持进程挂载目录和进程命名空间增强对外变更:
1.支持进程挂载目录，在/proc下可以看到进程挂载目录
2.支持pid容器和uts容器信息查询

Close #I6AEVV
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I6777889552d77e49da81249063f9f3db0af96f34

close: #I4ACTC
Signed-off-by: NLeon Chan <chenwei26@huawei.com>

close: #I3WGVP
Signed-off-by: Nchenwei <chenwei26@huawei.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

close: #I3T6MZ
Signed-off-by: Nli_zan <371442490@qq.com>

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: Ic443742e125915f0e5332a338dedea5c40348928

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306388