Add Red Hat 8.8 to CI

RHEL 8.8 will be added as parallel with RHEL 8.6 until packaging
site gives green light to remove the older Red Hat version.

Removing also some obsolete package installations.

Task-number: QTQAINFRA-5600
Change-Id: Ie77500a805a89db9019b5347539e662bc016af59
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jukka Jokiniva <jukka.jokiniva@qt.io>

coin/pre-provisioning/qtci-linux-RHEL-8.8-x86_64/README_MANUAL_INSTALLATIONS

@@ -0,0 +1,62 @@
+### RED HAT ENTERPRISE LINUX 8.8 ###
+
+Language: English (United States)
+Time & Date: Etc/Coordinated Universal Time
+Software Selection: Server with GUI
+Installation Destination: Automatic partitioning selected
+Root Passowrd: Set
+Network & Host..: Connect
+User Creation
+Beging Installation
+
+Reboot
+
+Licensing: Accept
+Finish Configuration
+
+gnome-initial-setup:
+Language: English (US)
+Typing:English (US)
+Privacy: Location Services: OFF
+Connect Your Online Accounts: Skip
+Start Using Red Hat Enterprise Linux
+
+# Add user to sudoers
+Add 'qt ALL=NOPASSWD: ALL' to /etc/sudoers.d/qt
+
+# Configure Settings
+ Notifications:
+    * Notification Popups: OFF
+    * Lock Screen Notifications: OFF
+ Privacy:
+    * Screen Lock: OFF
+ Power:
+    * Blank screen: Never
+ Details:
+    * Time & Date: Time Zone: UTC
+       * run "sudo timedatectl set-timezone Etc/UTC"
+    * Users: Automatic login on
+
+Add 'GRUB_GFXMODE=1280x800' to /etc/default/grub
+sudo grub2-mkconfig -o /etc/grub2.cfg
+sudo grub2-mkconfig -o /boot/grub2/grub.cfg
+
+# Add support for virtio driver
+su
+echo "add_drivers+=\" virtio-blk \"" >> /etc/dracut.conf.d/virtio.conf
+dracut -f
+
+# Do these from Opennebula UI!
+
+# Enable network connection from right upper corner
+
+ Devices:
+    * Displays: Resolution 1280 x 800
+
+# Fetch and run coin-setup
+Download http://coin/coin/binary/linux_amd64/coin-setup
+# run as qt user
+chmod 755 coin-setup
+run './coin-setup'
+
+Reboot