Centralize FDO 2.0 support check in utils.sh

Extract duplicate FDO 2.0 support check into check_fdo_20_support()
function in utils.sh. All three delegate tests now call this common
function instead of duplicating the check logic.

Reduces code duplication from ~7 lines × 3 tests to single function.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: runcom

test/ci/test-delegate-invalid-chain.sh

@@ -20,13 +20,7 @@ run_test() {
   log_info "Environment variables"
   show_env
 
-  log_info "Checking if client supports FDO 2.0"
-  if ! "${bin_dir}/go-fdo-client" onboard --help 2>&1 | grep -q "fdo-version"; then
-    log_warn "Client does not support --fdo-version flag, skipping FDO 2.0 delegate test"
-    trap - EXIT
-    test_pass
-    exit 0
-  fi
+  check_fdo_20_support
 
   log_info "Creating directories"
   create_directories

test/ci/test-delegate-onboarding.sh

@@ -52,13 +52,7 @@ run_test() {
   log_info "Environment variables"
   show_env
 
-  log_info "Checking if client supports FDO 2.0"
-  if ! "${bin_dir}/go-fdo-client" onboard --help 2>&1 | grep -q "fdo-version"; then
-    log_warn "Client does not support --fdo-version flag, skipping FDO 2.0 delegate test"
-    trap - EXIT
-    test_pass
-    exit 0
-  fi
+  check_fdo_20_support
 
   log_info "Creating directories"
   create_directories

test/ci/test-delegate-permissions.sh

@@ -16,13 +16,7 @@ run_test() {
   log_info "Environment variables"
   show_env
 
-  log_info "Checking if client supports FDO 2.0"
-  if ! "${bin_dir}/go-fdo-client" onboard --help 2>&1 | grep -q "fdo-version"; then
-    log_warn "Client does not support --fdo-version flag, skipping FDO 2.0 delegate test"
-    trap - EXIT
-    test_pass
-    exit 0
-  fi
+  check_fdo_20_support
 
   log_info "Creating directories"
   create_directories

test/ci/utils.sh

@@ -590,3 +590,15 @@ cleanup() {
   uninstall_client
   remove_files
 }
+
+# Check if client supports FDO 2.0 and skip test if not
+# This function will exit the script if FDO 2.0 is not supported
+check_fdo_20_support() {
+  log_info "Checking if client supports FDO 2.0"
+  if ! "${bin_dir}/go-fdo-client" onboard --help 2>&1 | grep -q "fdo-version"; then
+    log_warn "Client does not support --fdo-version flag, skipping FDO 2.0 delegate test"
+    trap - EXIT
+    test_pass
+    exit 0
+  fi
+}