Use double quotes instead of single quotes in ini

Within Icinga Web's ini files double quotes are needed to encapsulate
certain values. Changed single quotes to double quotes in template.

Fixes #301

changelogs/fragments/fix_issue_301.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "Certain values within Icinga Web :code:`ini` files got quoted incorrectly using single quotes. They are now quoted properly using double quotes (#301)."

molecule/ini-configuration-tests/tests/integration/test_ini_config.py

@@ -20,10 +20,10 @@ def test_advanced_filter(host):
     i2_file = host.file("/tmp/advanced_filter")
     print(i2_file.content_string)
     assert i2_file.is_file
-    assert i2_file.content_string == "\n[section]\ntest = '!(objectClass=user)'\ntest2 = '!(objectClass=user)'\ntest3 = '!attribute'\n"
+    assert i2_file.content_string == '\n[section]\ntest = "!(objectClass=user)"\ntest2 = "!(objectClass=user)"\ntest3 = "!attribute"\n'
 
 def test_equal_sign(host):
     i2_file = host.file("/tmp/equal_sign")
     print(i2_file.content_string)
     assert i2_file.is_file
-    assert i2_file.content_string == "\n[section]\ntest = 'equal=sign'\n"
+    assert i2_file.content_string == '\n[section]\ntest = "equal=sign"\n'

roles/icingaweb2/templates/ini_template.j2

@@ -7,8 +7,8 @@
 {{ option }} = "{{ value }}"
 {% elif value is iterable and (value is not string and value is not mapping) %}
 {{ option }} = "{{ value | join(', ') }}"
-{% elif ( value is string and ( "=" in value or "!" in value ) )%}
-{{ option }} = '{{ value }}'
+{% elif ( value is string and ( "=" in value or "!" in value or " " in value ) )%}
+{{ option }} = "{{ value }}"
 {% else %}
 {{ option }} = {{ value }}
 {% endif %}