CI: Use --output-on-failure flag for ctest

This flag makes sure that the verbose output of running the test cases
is not shown, unless the test fails. In that case the full output is
displayed (for that test case).

.ci/azure-pipelines/steps_linux.yml

@@ -12,7 +12,7 @@ steps:
     env:
       MUMBLE_BUILD_NUMBER_TOKEN: $(BUILD_NUMBER_TOKEN)
     displayName: 'Build'
-  - script: 'cd $BUILD_BINARIESDIRECTORY; QT_QPA_PLATFORM=offscreen ctest --verbose'
+  - script: 'cd $BUILD_BINARIESDIRECTORY; QT_QPA_PLATFORM=offscreen ctest --output-on-failure'
     displayName: 'Test'
 # - script: .ci/azure-pipelines/package_AppImage.bash
 #   displayName: 'Release'

.ci/azure-pipelines/steps_macos.yml

@@ -18,7 +18,7 @@ steps:
     env:
       MUMBLE_BUILD_NUMBER_TOKEN: $(BUILD_NUMBER_TOKEN)
     displayName: 'Build'
-  - script: 'cd $BUILD_BINARIESDIRECTORY; ctest --verbose'
+  - script: 'cd $BUILD_BINARIESDIRECTORY; ctest --output-on-failure'
     displayName: 'Test'
   - script: .ci/azure-pipelines/release_macos.bash
     displayName: 'Release'

.ci/azure-pipelines/steps_windows.yml

@@ -12,7 +12,7 @@ steps:
     env:
       MUMBLE_BUILD_NUMBER_TOKEN: $(BUILD_NUMBER_TOKEN)
     displayName: 'Build'
-  - script: 'cd /d %BUILD_BINARIESDIRECTORY% & ctest --verbose'
+  - script: 'cd /d %BUILD_BINARIESDIRECTORY% & ctest --output-on-failure'
     env:
       # Set timeout for tests to 15min
       QTEST_FUNCTION_TIMEOUT: 900000

.github/workflows/build.yml

@@ -67,5 +67,5 @@ jobs:
     - name: Test
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      run: QT_QPA_PLATFORM=offscreen ctest -v -C $BUILD_TYPE
+      run: QT_QPA_PLATFORM=offscreen ctest -output-on-failure -C $BUILD_TYPE