Fix correction of ansi characters of next line

[k-ribot]

Some time the character ANSI "^J" is returned by Zyxel router. We need to replace it by new line because with it the prompt found is wrong.

Example of output:

ZySH> 
ZySH> sys atsh
Firmware Version        : V5.50(ABPM.5)C0
Bootbase Version        : V1.46 | 12/02/2020 19:26:12
Vendor Name             : Zyxel Communications Corp.
Product Model           : VMG3625-T50B
Serial Number           : S210Y22036929
First MAC Address       : 5C648E13D570
Last MAC Address        : 5C648E13D57F
MAC Address Quantity    : 16
Default Country Code    : E1
Boot Module Debug Flag  : 00
Kernel Checksum         : 216D97EA
RootFS Checksum         : 662A48BE
Romfile Checksum        : 0000F4A1
Main Feature Bits       : 00
Other Feature Bits      : 
7fd9127d: 04050503 00000100 00000000 00000000
7fd9128d: 00000000 00000000 00000000 0000
ZySH> ^Jsys atsh
ZySH> 

So we have this error:
Pattern not detected: '\\^J' in output.

[ktbyers]

@k-ribot Why do we need to change the class Zyxel is inheriting from?

Also can you print out a repr of the output?

print(repr(output))

I am concerned we will break other things in the driver (if we change the parent class of the driver).

[ktbyers]

Closing as there was no response to the question of changing the parent class.