fix: Fix pattern to handle long system identity (#386)

* fix: Fix pattern to handle long system identity names

When the system identity string is too long, the terminal output may be
truncated. The truncated output is marked by multiple carriage returns
(`\r`) and a `<` symbol.

This is a example of a truncated output:
`\r\n\r\r\r\r<MY_VERYVERY-LONG-SYSTEM-IDENTIY-NAME] > `

The existing regex failed to match these truncated prompts.
This update introduces a more flexible regex that matches both, the truncated and the preserved output.

* add change-log fragment for pr 386

* refactoring change-log fragment for pr 386

* Update changelogs/fragments/386-fix-pattern-to-handle-long-identity.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

changelogs/fragments/386-fix-pattern-to-handle-long-identity.yml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - routeros terminal plugin - fix ``terminal_stdout_re`` pattern to handle long system identities when connecting to RouterOS through SSH (https://github.com/ansible-collections/community.routeros/pull/386).

plugins/terminal/routeros.py

@@ -31,7 +31,9 @@ class TerminalModule(TerminalBase):
 
     terminal_stdout_re = [
         re.compile(br"\x1b<"),
-        re.compile(br"\[[\w\-\.]+\@[\w\s\-\.\/]+\] ?(<SAFE)?> ?$"),
+        re.compile(
+            br"((\[[\w\-\.]+\@)|(\r\<(([\w\-\.]*\@)|)))"
+            br"[\w\s\-\.\/]+\] ?(<SAFE)?> ?$"),
         re.compile(br"Please press \"Enter\" to continue!"),
         re.compile(br"Do you want to see the software license\? \[Y\/n\]: ?"),
     ]