Description

Always use an absolute path to app.php

Motivation and Context

outdated appname/appinfo/app.php could be loaded if there are two versions of the same app in app directories

How Has This Been Tested?

1. install OC 10.2.1 with the default app directories:
   apps is non-writable, apps-external is writable
2. Copy any app from apps into apps-external, increase version in apps-external/appname/appinfo/app.php
3. set breakpoints on apps/appname/appinfo/app.php and apps-external/appname/appinfo/app.php or add logging to both files

Expected

breakpoint or logging is triggered in apps-external/appname/appinfo/app.php as it has more recent version

Actual

breakpoint or logging is triggered in apps/appname/appinfo/app.php

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised: