Support cloud-init's network-config.

org.jdrupes.vmoperator.runner.qemu/config-sample.yaml

@@ -34,9 +34,12 @@
   #     ...
   #   "userData":
   #     ...
+  #   "networkConfig":
+  #     ...
   # 
   # If .metaData.instance-id is missing, an id is generated from the
-  # config file's modification timestamp.   
+  # config file's modification timestamp. .userData and .networkConfig
+  # are optional.    
 
   # Define the VM (required)
   "vm":

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

@@ -88,6 +88,8 @@ public class Configuration implements Dto {
         public Map<String, Object> metaData;
         @SuppressWarnings("PMD.UseConcurrentHashMap")
         public Map<String, Object> userData;
+        @SuppressWarnings("PMD.UseConcurrentHashMap")
+        public Map<String, Object> networkConfig;
     }
 
     /**

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

@@ -503,6 +503,13 @@ public class Runner extends Component {
                     config.cloudInit.userData);
             }
             userOut.close();
+            if (config.cloudInit.networkConfig != null) {
+                var networkConfig = Files.newBufferedWriter(
+                    cloudInitDir.resolve("network-config"));
+                yamlMapper.writer().writeValue(networkConfig,
+                    config.cloudInit.networkConfig);
+                networkConfig.close();
+            }
             startProcess(cloudInitImgDefinition);
         } catch (IOException e) {
             logger.log(Level.SEVERE, e,

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

@@ -23,6 +23,9 @@
       mformat -C -f 1440 -v CIDATA -i ${ runtimeDir }/cloud-init.img
       && mcopy -i ${ runtimeDir }/cloud-init.img
       ${ dataDir }/cloud-init/meta-data ${ dataDir }/cloud-init/user-data ::
+      && if [ -r ${ dataDir }/cloud-init/network-config ]; then
+      mcopy -i ${ runtimeDir }/cloud-init.img 
+      ${ dataDir }/cloud-init/network-config :: ; fi
 
 "qemu":
   # Candidate paths for the executable