feat(config): add support for switch type parameters

In config file render only key name if key value is boolean and it is 'true'

keepalived/macro.jinja

@@ -30,7 +30,12 @@
           {%- if item[value] is string or item[value] is not iterable -%}
             {%- set forwardIndent = 0 -%}
           {%- endif -%}
+          {%- if item[value] is sameas true %}
+            {#- If curent parameter is boolen type like nopreempt, dont_track_primary, etc. just print its name -#}
+            {{- item[key]|indent(carryIndent, True) }}{{ '\n' -}}
+          {%- else %}
             {{- item[key]|indent(carryIndent, True) }} {{ print_config(item[value], recurse=recurse, indent=forwardIndent) -}}
+          {%- endif %}
         {%- endif -%}
       {%- endfor -%}
     {%- else -%}

pillar.example

@@ -39,6 +39,10 @@ keepalived:
         virtual_router_id: 51
         priority: 100
         advert_int: 1
+        # switch type parameters must be defined as boolean: true / false
+        # 1 / 0 values will be treated as numbers
+        # nopreempt: true
+        # dont_track_primary: true
         authentication:
           auth_type: PASS
           auth_pass: 1111