Report remote while requesting login

[marlamb]

Changelog: Fix: Add remote name to login prompt.
Docs: Omit
In setups with multiple remotes configured the prompt to enter a password might appear multiple times. After the first input users could deduce that the given password is wrong and in worst case start trying other ones, even if it was correct. Naming the remote name in the prompt as well will avoid such kind of confusion.

[marlamb]

• As it is a very small issue I did not care about opening an issue, but applied the fix directly.
• I have read the contributing guide.
• I followed PEP8 to my best knowledge.
• I did not open a PR on the Conan docs repository, as the change seems too small to affect the documentation.

[AbrilRBS]

Thanks a lot @marlamb for taking the time to improve this, we appreciate it :)

[AbrilRBS]

This could also he released as part of 2.8.1 if it lines up, will check with the team!

[memsharded]

Thanks very much for your contribution.
This is indeed a good addition, totally makes sense, lets get it for next release