asyncssh.connect 用法（解决手动输入yes）

1. asyncssh.connect（）参数

参数：known_hosts=None，解决asyncssh host key is not trusted，解决输入yes问题

# 连接华为设备，执行命令
async def run_process():
	ip_addr = "28.104.87.140"
	user = "root"
	password = "123456"
	kex_algs = ["diffie-hellman-group1-sha1", "diffie-hellman-group-exchange-sha1"]
	async with asyncssh.connect(ip_addr, username=user, password=password, kex_algs=kex_algs, encryption_algs=['aes256-cbc'], mac_algs=['hmac-sha2-256'], known_hosts=None) as conn:
		async with conn.create_process(stderr=asyncssh.STDOUT) as process:
			res = [1,2,3,4,5,6]
	content = {"res": res}
	return content