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-5854
Change-Id: Ie77500a805a89db9019b5347539e662bc016af59
(cherry picked from commit 5cca2b7ba4)
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>

coin/platform_configs/linux_android_tests_developer.yaml

@@ -15,3 +15,17 @@ Configurations:
         'NON_QTBASE_CMAKE_ARGS=-DFFMPEG_DIR={{.Env.FFMPEG_DIR_ANDROID}}',
         'NON_QTBASE_TARGET_CMAKE_ARGS=-DFEATURE_native_grpc=OFF',
         'ANDROID_EMULATOR=@emulator_x86_api_23']
+-
+    Id: 'android-x86-developer-build-testrun-on-linux-RHEL-8.8'
+    Template: 'qtci-linux-RHEL-8.8-x86_64-50'
+    Target os: 'Android_ANY'
+    Target arch: 'x86'
+    Compiler: 'GCC'
+    Target compiler: 'Clang'
+    Platform dependency: 'rhel-8.8'
+    Features: ['Packaging', 'Sccache', 'AndroidTestRun', 'UseConfigure']
+    Environment variables: [
+        'TARGET_CONFIGURE_ARGS=-nomake examples -debug -developer-build -android-ndk {{.Env.ANDROID_NDK_ROOT_DEFAULT}} -android-sdk {{.Env.ANDROID_SDK_ROOT}} -android-abis x86',
+        'TARGET_CMAKE_ARGS=-DCMAKE_C_COMPILER_FRONTEND_VARIANT=GNU -DCMAKE_CXX_COMPILER_FRONTEND_VARIANT=GNU -DOPENSSL_ROOT_DIR={{.Env.OPENSSL_ANDROID_HOME_DEFAULT}}',
+        'NON_QTBASE_CMAKE_ARGS=-DFFMPEG_DIR={{.Env.FFMPEG_DIR_ANDROID}}',
+        'ANDROID_EMULATOR=@emulator_x86_api_23']