ci: Skip tests depend on virtualization on riscv64

`VMContainerCapable` requires a present `kvm` device, which is not yet
available in our RISC-V runners. Skipped related tests if it is running
on `riscv-builder`.

Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>

.github/workflows/build-checks-preview-riscv64.yaml

@@ -106,6 +106,10 @@ jobs:
         run: |
           XDG_RUNTIME_DIR=$(mktemp -d "/tmp/kata-tests-$USER.XXX" | tee >(xargs chmod 0700))
           echo "XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR}" >> "$GITHUB_ENV"
+      - name: Skip tests that depend on virtualization capable runners when needed
+        if: inputs.instance == 'riscv-builder'
+        run: |
+          echo "GITHUB_RUNNER_CI_NON_VIRT=true" >> "$GITHUB_ENV"
       - name: Running `${{ matrix.command }}` for ${{ matrix.component.name }}
         run: |
           cd ${{ matrix.component.path }}

src/runtime/cmd/kata-runtime/kata-check_riscv64_test.go

@@ -22,6 +22,10 @@ func setupCheckHostIsVMContainerCapable(assert *assert.Assertions, cpuInfoFile s
 }
 
 func TestCCCheckCLIFunction(t *testing.T) {
+	if os.Getenv("GITHUB_RUNNER_CI_NON_VIRT") == "true" {
+		t.Skip("Skipping the test as the GitHub self hosted runners for RISC-V do not support Virtualization")
+	}
+
 	var cpuData []testCPUData
 	moduleData := []testModuleData{
 		{filepath.Join(sysModuleDir, "kvm"), "", true},