🐛 Add HTTP_AUTHORIZATION environment variable handling for Apache virtual hosts

[Lenaick]

Base information

Question	Answer
Related to a SourceForge thread / Another PR / Combodo ticket?	No
Type of change?	Bug fix

Symptom

"Error: Invalid login" when call an iTop webservice with basic authentication

Reproduction procedure

1. Enable Apache
2. Call an iTop webservice using basic authentication
3. Observe the error

Cause

ITop webservices are not accessible with basic authentication when Apache redirects the request to the PHP handler. The Authorization header is not converted to the HTTP_AUTHORIZATION header in the PHP request.

Proposed solution

Add a rule in the Apache vhosts to transform the Authorization header into the HTTP_AUTHORIZATION header.

Checklist before requesting a review

• I have performed a self-review of my code
• I have tested all changes I made on an iTop instance
• Would a unit test be relevant and have I added it?
• Is the PR clear and detailed enough so anyone can understand without digging in the code?