Allow options with values of false to override things that mysql default to true

instead of being elided, leaving the default.

spec/classes/mysql_server_spec.rb

@@ -33,6 +33,24 @@ describe 'mysql::server' do
     end
   end
 
+  describe 'an option set to true' do
+    let(:params) {
+      { :override_options => { 'mysqld' => { 'ssl' => true } }}
+    }
+    it do
+      should contain_file('/etc/my.cnf').with_content(/^\s*ssl\s*(?:$|= true)/m)
+    end
+  end
+
+  describe 'an option set to false' do
+    let(:params) {
+      { :override_options => { 'mysqld' => { 'ssl' => false } }}
+    }
+    it do
+      should contain_file('/etc/my.cnf').with_content(/^\s*ssl = false/m)
+    end
+  end
+
   context 'with remove_default_accounts set' do
     let (:params) {{ :remove_default_accounts => true }}
     it { should contain_class('mysql::server::account_security') }

templates/my.cnf.erb

@@ -2,16 +2,14 @@
 <%   if v.is_a?(Hash) -%>
 [<%=   k %>]
 <%     v.sort.map do |ki, vi| -%>
-<%       if vi == true -%>
+<%       if vi == true or v == '' -%>
 <%=        ki %>
 <%       elsif vi.is_a?(Array) -%>
 <%         vi.each do |vii| -%>
 <%=          ki %> = <%= vii %>
 <%         end -%>
-<%       elsif vi and vi != '' -%>
+<%       else -%>
 <%=        ki %> = <%= vi %>
-<%       elsif vi -%>
-<%=        ki %>
 <%       end -%>
 <%     end -%>
 <%   end %>