univention.ucs_modules.univention_app: self-service does not get installed if self-service-backend is installed

[s3lph]

The univention.ucs_modules.univention_app module tries to check whether an app is already installed:

ansible-modules/plugins/modules/univention_app.py

Line 269 in ffc300f

return _appname in AVAILABLE_APPS_LIST and list(filter(lambda x: _appname in x, INSTALLED_APPS_LIST))

On one of our systems, INSTALLED_APPS_LIST looks like this: ["ox-connector=2.2.7", "self-service-backend=5.0"].

Since this line of code performs a string-in-string comparison against the entries in INSTALLED_APPS_LIST, the app self-service will be considered already installed, though it's actually the app self-service-backend that is installed.