fix(vhosts/standard.tmpl): fix salt-lint errors

```bash
Examining apache/vhosts/standard.tmpl of type state
[206] Jinja variables should have spaces before and after: {{ var_name }}
apache/vhosts/standard.tmpl:46
<VirtualHost {% for intf in vals.interfaces %} {{intf}}:{{ vals.port }}{% endfor -%}>

[206] Jinja variables should have spaces before and after: {{ var_name }}
apache/vhosts/standard.tmpl:70
    {% if site.get('SSLCertificateChainFile') %}SSLCertificateChainFile {{ site.SSLCertificateChainFile}}{% endif %}

[201] Trailing whitespace
apache/vhosts/standard.tmpl:72

[206] Jinja variables should have spaces before and after: {{ var_name }}
apache/vhosts/standard.tmpl:96
        {% if dvals.get('Require') != False %}Require {{dvals.Require}}{% endif %}

[206] Jinja variables should have spaces before and after: {{ var_name }}
apache/vhosts/standard.tmpl:120
        {%- if lvals.get('Require') != False %}Require {{lvals.Require}}{% endif %}
```

apache/vhosts/standard.tmpl

@@ -43,7 +43,7 @@
     },
 } -%}
 
-<VirtualHost {% for intf in vals.interfaces %} {{intf}}:{{ vals.port }}{% endfor -%}>
+<VirtualHost {% for intf in vals.interfaces %} {{ intf }}:{{ vals.port }}{% endfor -%}>
     ServerName {{ vals.ServerName }}
     {% if site.get('ServerAlias') != False %}ServerAlias {{ vals.ServerAlias }}{% endif %}
 
@@ -67,9 +67,9 @@
     {% if site.get('SSLCertificateFile') %}SSLEngine on
     SSLCertificateFile {{ site.SSLCertificateFile }}
     {% if site.get('SSLCertificateKeyFile') %}SSLCertificateKeyFile {{ site.SSLCertificateKeyFile }}{% endif %}
-    {% if site.get('SSLCertificateChainFile') %}SSLCertificateChainFile {{ site.SSLCertificateChainFile}}{% endif %}
+    {% if site.get('SSLCertificateChainFile') %}SSLCertificateChainFile {{ site.SSLCertificateChainFile }}{% endif %}
     {% endif %}
-    
+
     {% if site.get('Rewrite') %}RewriteEngine on
     {{ site.Rewrite }}
     {%  endif %}
@@ -93,7 +93,7 @@
     <Directory "{{ path }}">
         {% if dvals.get('Options') != False %}Options {{ dvals.Options }}{% endif %}
         {% if map.version == '2.4' %}
-        {% if dvals.get('Require') != False %}Require {{dvals.Require}}{% endif %}
+        {% if dvals.get('Require') != False %}Require {{ dvals.Require }}{% endif %}
         {% else %}
         {% if dvals.get('Order') != False %}Order {{ dvals.Order }}{% endif %}
         {% if dvals.get('Allow') != False %}Allow {{ dvals.Allow }}{% endif %}
@@ -117,7 +117,7 @@
 
     <Location "{{ path }}">
         {% if map.version == '2.4' %}
-        {%- if lvals.get('Require') != False %}Require {{lvals.Require}}{% endif %}
+        {%- if lvals.get('Require') != False %}Require {{ lvals.Require }}{% endif %}
         {% else %}
         {%- if lvals.get('Order') != False %}Order {{ lvals.Order }}{% endif %}
         {%- if lvals.get('Allow') != False %}Allow {{ lvals.Allow }}{% endif %}