Merge pull request 'fix(opnsense-config): mark Interface::enable as optional' (#181) from fix-opnsense-config into master

Reviewed-on: https://git.nationtech.io/NationTech/harmony/pulls/181

opnsense-config-xml/src/data/interfaces.rs

@@ -9,7 +9,7 @@ pub struct Interface {
     pub physical_interface_name: String,
     pub descr: Option<MaybeString>,
     pub mtu: Option<MaybeString>,
-    pub enable: MaybeString,
+    pub enable: Option<MaybeString>,
     pub lock: Option<MaybeString>,
     #[yaserde(rename = "spoofmac")]
     pub spoof_mac: Option<MaybeString>,
@@ -134,19 +134,15 @@ mod test {
   <interfaces>
     <paul>
       <if></if>
-      <enable/>
     </paul>
     <anotherpaul>
       <if></if>
-      <enable/>
     </anotherpaul>
     <thirdone>
       <if></if>
-      <enable/>
     </thirdone>
     <andgofor4>
       <if></if>
-      <enable/>
     </andgofor4>
   </interfaces>
   <bar>foo</bar>