Add maintenance mode in cisco_nxos prompt patterns

[mota-ovhcloud]

Handling maintenance mode (maint-mode) in prompts on Cisco NX-OS.

Description

When maintenance mode is activated on Cisco NX-OS (with config command "system mode maintenance"), device's prompt is modified as below:

• Privileged: hostname(maint-mode)#
• Config: hostname(maint-mode)(config)#
• Tclsh privlieged: hostname(maint-mode-tcl)#
• Tclsh config: hostname(maint-mode)(config-tcl)#

This PR proposes the modification of related cisco_nxos base_driver.py patterns.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Tested with real device by modifying the following properties of scrapli object:

• connection.comms_prompt_pattern
• connection.privilege_levels.values.pattern of 'privilege_exec' and 'configuration'

This hasn't unfortunately been tested on unprivileged mode.

[carlmontanari]

👋 hey @mota-ovhcloud -- seems pretty reasonable to me! would you be able to add some tests here and take a look at why pytest is upset about the escapes?

Thanks for raising this!

[mota-ovhcloud]

Hey @carlmontanari, thanks for your reply !
OK, will definitely add the required tests. I found the typo (\m) that causes pytest to be upset, line 51 :)
Mota

[carlmontanari]

welp... ssh2 continues to be a pita in ci and in general hah. but that is not related to this so will go ahead and get this merged and fix that... later :) thanks for the work @mota-ovhcloud !

[mota-ovhcloud]

Thanks a lot Carl, for the whole work !