ims_registrar_scscf: fix aor generation in lookup()

[alexyosifov]

• Generate AoR in lookup() from parsed uri user and
  host. Skipping all user's and host's parameters.

Pre-Submission Checklist

• Commit message has the format required by CONTRIBUTING guide
• Commits are split per component (core, individual modules, libs, utils, ...)
• Each component has a single commit (if not, squash them into one commit)
• No commits to README files for modules (changes must be done to docbook files
  in doc/ subfolder, the README file is autogenerated)

Type Of Change

• Small bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would change existing functionality)

Checklist:

• PR should be backported to stable branches
• Tested changes locally
• Related to issue #XXXX (replace XXXX with an open issue number)

Description

[henningw]

@ngvoice - any comments from your side regarding this change?

[alexyosifov]

Hi all,
Could you take a look at the pull request?

[henningw]

There seems to be no objections from ngvoice or other developers, fine for me to merge it.
Should it be backported to stable branches?

[miconda]

Thanks!

@alexyosifov is not developer, so I am merging it. Should be backported, a note can be made here in a comment or also a PR.