qtbase5-dev package depends on qtwayland5 but doesn't install it

[Utku Helvacı]

When building obs-studio from github i encored a problem:
```
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfig.cmake:27 (message):
  The imported target "Qt5::Gui" references the file

     "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so"

  but this file does not exist. Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QWaylandEglPlatformIntegrationPlugin.cmake"

  but not all the files it references.
```
i found that "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so" file is exist on "qtwayland5" package and installing it fixed the problem

[Dmitry Shachnev (mitya57)]

This dependency is in Qt5Gui_QWaylandEglPlatformIntegrationPlugin.cmake. It is shipped in libqt5waylandcompositor5-dev, not in qtbase5-dev, so I am reassigning this bug accordingly.

I have fixed it in this commit in our packaging Git: https://salsa.debian.org/qt-kde-team/qt/qtwayland/commit/058587ef88cf5f6c. It will be available in Ubuntu Disco (development series) in the next upload.

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtwayland-opensource-src - 5.11.3-2

---------------
qtwayland-opensource-src (5.11.3-2) unstable; urgency=medium

  [ Simon Quigley ]
  * Change my email to <email address hidden> now that I am a Debian Developer.
  * Bump Standards-version to 4.3.0, no changes needed.

  [ Lisandro Damián Nicanor Pérez Meyer ]
  * Upload to unstable.

 -- Lisandro Damián Nicanor Pérez Meyer <email address hidden> Wed, 26 Dec 2018 16:59:01 -0300