Handle bridge name correctly.

org.jdrupes.vmoperator.runner.qemu/.gitignore

@@ -1,3 +1,4 @@
 config.yaml
 /config-w11.yaml
 /config-fedora.yaml
+/config-test-vm.yaml

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/Configuration.java

@@ -159,7 +159,7 @@ class Configuration implements Dto {
      */
     public static class Network implements Dto {
         public String type = "tap";
-        public String bridge = "br0";
+        public String bridge;
         public String device = "virtio-net";
         public String mac;
         public String net;

org.jdrupes.vmoperator.runner.qemu/templates/Standard-VM-latest.ftl.yaml

@@ -123,7 +123,8 @@
     <#list vm.network![] as itf>
     <#switch itf.type!"tap">
     <#case "tap">
-    - [ "-netdev", "bridge,id=hostnet${ nwCounter }" ]
+    - [ "-netdev", "bridge,id=hostnet${ nwCounter }\
+        <#if itf.bridge??>,br=${ itf.bridge }</#if>" ]
     - [ "-device", "${ itf.device },netdev=hostnet${ nwCounter }\
         <#if itf.mac??>,mac=${ itf.mac }</#if>" ]
     <#break>