[18.09 backport] fixes 1492: tty initial size error

[thaJeztah]

backport of #1377 and #1529 for 18.09

fixes #1492

For Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-62-generic x86_64), Docker version 17.12.0-ce, build c97c6d6 / 18.03.0-ce, build 0520e24
When I run: docker exec -it ubuntu /bin/bash
The tty's size is small than window's size.

root@iZ2zeesy3n96esegm7tue0Z:~# docker exec -it ubuntu /bin/bash
root@97b3e229a701:/# ls -a
.   .dockerenv  bin   dev  home  lib64  mnt  proc  run   srv  tmp  var
..  .r          boot  etc  lib   media  opt  root  sbin  sys  usr

After I fix the bug:

root@iZ2zeesy3n96esegm7tue0Z:~# ./docker-linux-amd64 exec -it ubuntu /bin/bash
root@97b3e229a701:/# ls -a
.  ..  .dockerenv  .r  bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var

If not fix this bug, it's too inconvenient for me to use docker exec -it.

- What I did

1. Fix tty initial size error
   I think it's a bug of dockerd, but for previous dockerd edition, I think we can fix it in cli.
2. Fix when we use --debug flag, the first shell prompt don't return to the head of line when we got an error in func resizeTtyTo!

- How I did it
func MonitorTtySize in file cli/command/container/tty.go
I move the call resizeTty() to last and run it asynchronously.

1. Because in sometimes when dockercli call tty resize, the exec have not finished yet. Then we got a message "Error response from daemon: no such exec", but we ignore it, so we need to throw this error and deal with it after 10 milliseconds.
2. Add \r when logrus.Debugf.

- How to verify it
It's convenient for me to use docker exec -it.
I don't need to resize the window.

- Description for the changelog
fixes tty initial size error

- I have no more cute animal now
Before fix:
vim /etc/mime.types

After fix:
vim /etc/mime.types

[thaJeztah]

ping @silvin-lubecki @kolyshkin ptal

[codecov-io]

Codecov Report

Merging #1775 into 18.09 will increase coverage by 0.15%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##            18.09    #1775      +/-   ##
==========================================
+ Coverage   54.07%   54.22%   +0.15%     
==========================================
  Files         290      290              
  Lines       19414    19428      +14     
==========================================
+ Hits        10498    10535      +37     
+ Misses       8244     8214      -30     
- Partials      672      679       +7

[codecov-io]

Codecov Report

Merging #1775 into 18.09 will increase coverage by 0.15%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##            18.09    #1775      +/-   ##
==========================================
+ Coverage   54.07%   54.22%   +0.15%     
==========================================
  Files         290      290              
  Lines       19414    19428      +14     
==========================================
+ Hits        10498    10535      +37     
+ Misses       8244     8214      -30     
- Partials      672      679       +7

[silvin-lubecki]

LGTM