validate copy kubetarball

[oldthreefeng]

fix #491 . 复制过程 如果文件存在和PkgUrl路径下的进行MD5比对,
比对不一样, 就删除远程的主机文件(是退出安装还是删除文件靠谱点..),

不存在复制,沿用逻辑..
[SKIP CI]seaols: 一句话简短描述该PR内容

日志

$ sealos  init --master 192.168.1.21 --pkg-url kube1.18.8.tar.gz  --version v1.18.8
14:25:11 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] hostname
14:25:11 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: k8s-dev

14:25:11 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] cat /etc/hosts |grep k8s-dev || echo '192.168.1.21 k8s-dev' >> /etc/hosts
14:25:11 [INFO] [ssh.go:51] [192.168.1.21:22] 192.168.1.21 k8s-dev
14:25:11 [INFO] [check.go:52] [192.168.1.21:22]  ------------ check ok
14:25:11 [INFO] [print.go:13] 
[globals]sealos config is:  {"Hosts":["192.168.1.21:22"],"Masters":["192.168.1.21:22"],"Nodes":null}
14:25:11 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] mkdir -p /usr/bin || true
14:25:11 [DEBG] [download.go:29] [192.168.1.21:22]please wait for mkDstDir
14:25:11 [DEBG] [download.go:31] [192.168.1.21:22]please wait for before hook
14:25:11 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] ps -ef |grep -v 'grep'|grep sealos >/dev/null || rm -rf /usr/bin/sealos
14:25:11 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] ls -l /usr/bin/sealos 2>/dev/null |wc -l
14:25:12 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 1

14:25:12 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] md5sum /usr/bin/sealos | cut -d" " -f1
14:25:12 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 7b8912b8255a3ded07bd985e16d91238

14:25:12 [INFO] [download.go:36] [192.168.1.21:22]SendPackage:  /usr/bin/sealos file is exist and ValidateMd5 success
14:25:12 [DEBG] [download.go:49] [192.168.1.21:22]please wait for after hook
14:25:12 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] chmod a+x /usr/bin/sealos
14:25:14 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] mkdir -p /root || true
14:25:14 [DEBG] [download.go:29] [192.168.1.21:22]please wait for mkDstDir
14:25:14 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] ls -l /root/kube1.18.8.tar.gz 2>/dev/null |wc -l
14:25:14 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 1

14:25:15 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] md5sum /root/kube1.18.8.tar.gz | cut -d" " -f1
14:25:17 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: cd3d5791b292325d38bbfaffd9855312

14:25:17 [INFO] [download.go:36] [192.168.1.21:22]SendPackage:  /root/kube1.18.8.tar.gz file is exist and ValidateMd5 success

存在但是md5不对.

14:58:34 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] ps -ef |grep -v 'grep'|grep sealos >/dev/null || rm -rf /usr/bin/sealos
14:58:34 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] ls -l /usr/bin/sealos 2>/dev/null |wc -l
14:58:34 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 1

14:58:34 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] md5sum /usr/bin/sealos | cut -d" " -f1
14:58:34 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: c305a622668a7f6f0a02c9798f3eb3a7

14:58:34 [INFO] [download.go:36] [192.168.1.21:22]SendPackage:  /usr/bin/sealos file is exist and ValidateMd5 success
14:58:34 [DEBG] [download.go:54] [192.168.1.21:22]please wait for after hook
14:58:34 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] chmod a+x /usr/bin/sealos
14:58:36 [INFO] [ssh.go:58] [ssh][192.168.1.21:22] mkdir -p /root || true
14:58:36 [DEBG] [download.go:29] [192.168.1.21:22]please wait for mkDstDir
14:58:36 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] ls -l /root/kube1.18.8.tar.gz 2>/dev/null |wc -l
14:58:36 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 1

14:58:37 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] md5sum /root/kube1.18.8.tar.gz | cut -d" " -f1
14:58:38 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: d41d8cd98f00b204e9800998ecf8427e

14:58:38 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] rm -f /root/kube1.18.8.tar.gz
14:58:38 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: 
14:58:38 [DEBG] [scp.go:27] [ssh]source file md5 value is cd3d5791b292325d38bbfaffd9855312
14:58:39 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 100.00MB ;speed is 100MB
14:58:40 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 200.00MB ;speed is 100MB
14:58:41 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 300.00MB ;speed is 100MB
14:58:42 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 400.00MB ;speed is 100MB
14:58:43 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 500.00MB ;speed is 100MB
14:58:44 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 600.00MB ;speed is 100MB
14:58:44 [INFO] [scp.go:101] [ssh][192.168.1.21:22]transfer total size is: 610.15MB ;speed is 10MB
14:58:44 [INFO] [ssh.go:13] [ssh][192.168.1.21:22] md5sum /root/kube1.18.8.tar.gz | cut -d" " -f1
14:58:46 [DEBG] [ssh.go:25] [ssh][192.168.1.21:22]command result is: cd3d5791b292325d38bbfaffd9855312

14:58:46 [DEBG] [scp.go:30] [ssh]host: 192.168.1.21:22 , remote md5: cd3d5791b292325d38bbfaffd9855312
14:58:46 [INFO] [scp.go:34] [ssh]md5 validate true
14:58:46 [INFO] [download.go:41] [192.168.1.21:22]copy file md5 validate success

[oldthreefeng]

这里待考虑, 复制过程, 文件存在 ,但是目标文件的md5和源文件的md5校验失败的情况下. sealos该如何处理??