provisioning: install gstreamer h264 codec on openSUSE and rhel9

The h264 codec is required to run the gstreamer-based unit tests on CI.

Change-Id: Ic47ee086687230613d56f30d3fd613288e37ce7f
Reviewed-by: Jøger Hansegård <joger.hansegard@qt.io>
(cherry picked from commit 58e0090020)
Reviewed-by: Tim Blechmann <tim.blechmann@qt.io>

coin/provisioning/qtci-linux-RHEL-9.2-x86_64/04-install-packages.sh

@@ -63,6 +63,7 @@ installPackages+=(dbus-devel)
 installPackages+=(gstreamer1-plugins-bad-free)
 installPackages+=(gstreamer1-devel)
 installPackages+=(gstreamer1-plugins-base-devel)
+installPackages+=(gstreamer1-plugin-openh264)
 # pipewire for QtMultimedia
 installPackages+=(pipewire-devel)
 # yasm for QtMultimedia

coin/provisioning/qtci-linux-RHEL-9.4-x86_64/04-install-packages.sh

@@ -63,6 +63,7 @@ installPackages+=(dbus-devel)
 installPackages+=(gstreamer1-plugins-bad-free)
 installPackages+=(gstreamer1-devel)
 installPackages+=(gstreamer1-plugins-base-devel)
+installPackages+=(gstreamer1-plugin-openh264)
 # pipewire for QtMultimedia
 installPackages+=(pipewire-devel)
 # yasm for QtMultimedia

coin/provisioning/qtci-linux-openSUSE-15.5-x86_64/04-zypperpackages.sh

@@ -49,7 +49,7 @@ sudo zypper -nq install libxml2-devel libxslt-devel
 sudo zypper -nq install yasm
 
 # GStreamer (qtwebkit and qtmultimedia), pulseaudio (qtmultimedia)
-sudo zypper -nq install gstreamer-devel gstreamer-plugins-base-devel libpulse-devel pipewire-devel
+sudo zypper -nq install gstreamer-devel gstreamer-plugins-base-devel libpulse-devel pipewire-devel gstreamer-1.20-plugin-openh264
 
 # cups
 sudo zypper -nq install cups-devel