Maven2のdeployで「Error deploying artifact: Unsupported Protocol: 'dav': Cannot find wagon which supports the requested protocol: dav」

gistfile1.txt

[WARN] repository metadata for: 'snapshot maven2sample:maven2sample:0.0.1-SNAPSHOT' could not be retrieved from repository: localhost.maven2 due to an error: Unsupported Protocol: 'dav': Cannot find wagon which supports the requested protocol: dav
[INFO] Repository 'localhost.maven2' will be blacklisted
org.apache.maven.plugin.MojoExecutionException: Error deploying artifact: Unsupported Protocol: 'dav': Cannot find wagon which supports the requested protocol: dav
at org.apache.maven.plugin.deploy.DeployMojo.execute(DeployMojo.java:195)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:578)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:508)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:328)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:151)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:220)
at org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:813)
at org.maven.ide.eclipse.embedder.Maven2Executor.main(Maven2Executor.java:85)
Caused by: org.apache.maven.artifact.deployer.ArtifactDeploymentException: Error deploying artifact: Unsupported Protocol: 'dav': Cannot find wagon which supports the requested protocol: dav
at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:115)
at org.apache.maven.plugin.deploy.DeployMojo.execute(DeployMojo.java:173)
... 7 more
Caused by: org.apache.maven.wagon.TransferFailedException: Unsupported Protocol: 'dav': Cannot find wagon which supports the requested protocol: dav
at org.apache.maven.artifact.manager.DefaultWagonManager.putRemoteFile(DefaultWagonManager.java:181)
at org.apache.maven.artifact.manager.DefaultWagonManager.putArtifact(DefaultWagonManager.java:150)
at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:103)
... 8 more
Caused by: org.apache.maven.wagon.UnsupportedProtocolException: Cannot find wagon which supports the requested protocol: dav
at org.apache.maven.artifact.manager.DefaultWagonManager.getWagon(DefaultWagonManager.java:136)
at org.apache.maven.artifact.manager.DefaultWagonManager.putRemoteFile(DefaultWagonManager.java:175)
... 10 more

gistfile2.txt

<build>
  <extensions>
    <groupId>org.apache.maven.wagon</groupId>
    <artifactId>wagon-webdav</artifactId>
  </extensions>
</build>

gistfile3.txt

<build>
  <extensions>
    <extension>
      <groupId>org.apache.maven.wagon</groupId>
      <artifactId>wagon-webdav</artifactId>
      <version>1.0-beta-2</version>
    </extension>
  </extensions>
</build>