bin: Only show invalid values in validate

This reduces the amount of output when the config is validated on load while running other commands, which tends to
become repetitive and overly verbose.

If you run `ck8s validate`, you are probably more interested in seeing these details.

bin/ck8s

@@ -123,7 +123,7 @@ install-requirements)
 validate)
   [[ "${2}" =~ ^(wc|sc)$ ]] || usage
   check_tools
-  config_load "$2"
+  config_load "$2" -v
   echo "Config validation successful"
   ;;
 providers) echo "${ck8s_cloud_providers[@]}" ;;

bin/common.bash

@@ -393,13 +393,15 @@ validate_config() {
     if ! yajsv -s "${schema_file}" "${merged_config}" >"${schema_validation_result}"; then
       log_warning "Failed schema validation:"
       sed -r 's/^.*_(..-config\.yaml): fail: (.*)/\1: \2/; / failed validation$/q' <"${schema_validation_result}"
-      grep -oP '(?<=fail: )[^:]+' "${schema_validation_result}" | sort -u |
-        while read -r jpath; do
-          if [[ $jpath != "(root)" ]]; then
-            echo -n ".$jpath = "
-            yq4 -oj ".$jpath" "${merged_config}"
-          fi
-        done
+      if [[ "${3:-}" == "-v" ]]; then
+        grep -oP '(?<=fail: )[^:]+' "${schema_validation_result}" | sort -u |
+          while read -r jpath; do
+            if [[ $jpath != "(root)" ]]; then
+              echo -n ".$jpath = "
+              yq4 -oj ".$jpath" "${merged_config}"
+            fi
+          done
+      fi
       maybe_exit="true"
     fi
   }
@@ -431,10 +433,10 @@ validate_config() {
 
   check_conditionals "${config_to_validate}" "${template_file}"
   validate "${config_to_validate}" "${template_file}"
-  schema_validate "${config_to_validate}" "${config_template_path}/schemas/config.yaml"
+  schema_validate "${config_to_validate}" "${config_template_path}/schemas/config.yaml" "${2:-}"
   check_conditionals "${secrets[secrets_file]}" "${config_template_path}/secrets.yaml"
   validate "${secrets[secrets_file]}" "${config_template_path}/secrets.yaml"
-  schema_validate "${secrets[secrets_file]}" "${config_template_path}/schemas/secrets.yaml"
+  schema_validate "${secrets[secrets_file]}" "${config_template_path}/schemas/secrets.yaml" "${2:-}"
 
   if ${maybe_exit} && ! ${CK8S_AUTO_APPROVE}; then
     ask_abort
@@ -473,13 +475,13 @@ validate_sops_config() {
 }
 
 # Load and validate all configuration options from the config path.
-# Usage: config_load <sc|wc> [sk]
+# Usage: config_load <sc|wc> [--skip-validation|-v]
 config_load() {
   load_config "$1"
 
   if [[ "--skip-validation" != "${2:-''}" ]]; then
     validate_version "$1"
-    validate_config "$1"
+    validate_config "$1" "${2:-''}"
     validate_sops_config
   fi
 }