Support Maven 3.2

The plugin doesn't seem to run when using Maven 3.2. I get the following stacktrace in the Jenkins log when the cron triggers execution:

```
INFO: run MavenUpdateChecker for project xxx on node Jenkins
Jun 02, 2015 10:23:00 AM org.eclipse.sisu.reflect.Logs$JULSink warn
WARNING: Error injecting: org.apache.maven.project.DefaultProjectBuilder
com.google.inject.ProvisionException: Guice provision errors:

1) Error injecting: private org.codehaus.plexus.logging.Logger org.apache.maven.project.DefaultProjectBuilder.logger
while locating org.apache.maven.project.DefaultProjectBuilder

1 error
at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:974)
at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1000)
at org.eclipse.sisu.reflect.AbstractDeferredClass.get(AbstractDeferredClass.java:44)
at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:84)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:52)
at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
at org.eclipse.sisu.plexus.lifecycles.PlexusLifecycleManager.onProvision(PlexusLifecycleManager.java:134)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:108)
at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:45)
at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1018)
at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
at com.google.inject.Scopes$1$1.get(Scopes.java:59)
at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
at com.google.inject.internal.InjectorImpl$3$1.call(InjectorImpl.java:965)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1011)
at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:961)
at org.eclipse.sisu.locators.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
at org.eclipse.sisu.plexus.locators.LazyPlexusBean.getValue(LazyPlexusBean.java:52)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:259)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:251)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:245)
at org.jvnet.hudson.plugins.mavendepsupdate.MavenUpdateChecker.call(MavenUpdateChecker.java:163)
at org.jvnet.hudson.plugins.mavendepsupdate.MavenUpdateChecker.call(MavenUpdateChecker.java:87)
at hudson.remoting.LocalChannel.call(LocalChannel.java:45)
at org.jvnet.hudson.plugins.mavendepsupdate.MavenDependencyUpdateTrigger.run(MavenDependencyUpdateTrigger.java:175)
at hudson.triggers.Trigger.checkTriggers(Trigger.java:266)
at hudson.triggers.Trigger$Cron.doRun(Trigger.java:214)
at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Can not set org.codehaus.plexus.logging.Logger field org.apache.maven.project.DefaultProjectBuilder.logger to org.codehaus.plexus.logging.console.ConsoleLogger
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
at java.lang.reflect.Field.set(Field.java:741)
at org.eclipse.sisu.reflect.BeanPropertyField.set(BeanPropertyField.java:72)
at org.eclipse.sisu.plexus.binders.ProvidedPropertyBinding.injectProperty(ProvidedPropertyBinding.java:48)
at org.eclipse.sisu.inject.BeanInjector.injectMembers(BeanInjector.java:52)
at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:128)
at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:117)
at com.google.inject.internal.ConstructorInjector.access$000(ConstructorInjector.java:32)
at com.google.inject.internal.ConstructorInjector$1.call(ConstructorInjector.java:91)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:115)
at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:89)
at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:259)
at com.google.inject.internal.InjectorImpl$3$1.call(InjectorImpl.java:965)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1018)
at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:961)
... 38 more
```

The failure is reported through MavenUpdateChecker.call at MavenUpdateChecker.java:163 and is triggered by MavenDependencyUpdateTrigger.java:175. Start by reproducing the cron execution with Maven 3.2 and inspect the plugin's Maven integration; done means the trigger runs without the shown injection error under Maven 3.2.

Written by the indexing model from the issue text.