New version 28.14-1
    
    - Use observers in the install manager (vponcova)
    - Modify readme file for tests (jkonecny)
    - Do not bump version when testing installation (jkonecny)
    - Add set up test environment script (jkonecny)
    - Add dependency solver script (jkonecny)
    - Differentiate upstream and build-time version (#1493952) (mkolman)
    - Fix bad bash '*' expansion when loading kernel modules (#1525841) (jkonecny)
    - Fix connection to a signal in the install manager (vponcova)
    - Use the InterfaceTemplate in the InstallationInterface (vponcova)
    - Use the InterfaceTemplate in the TaskInterface (vponcova)
    - Add a base class for DBus interfaces (vponcova)
    - Update module manager to use observers (vponcova)
    - Add DBus observers for better access to proxies. (vponcova)
    - Remove running CI in mock from Makefile (jkonecny)
    - Add xfsprogs and git to the test requirements (jkonecny)
    - The gettext-devel is required by autogen (jkonecny)
    - Remove kickstart-test dependencies from test requires (jkonecny)