use more distinguishable YARN application name

[kmaehashi]

This patch improves the YARN application name of JubaQL Processor and Jubatus-on-YARN.
This makes operators easy to distinguish each JoY job in management tools like YARN Resource Manager Web UI.

This patch depends on new JoY interface implemented in jubatus/jubatus-on-yarn#7.

[kmaehashi]

Revised the contents of this PR to keep up with the latest jubatus/jubatus-on-yarn#7.

[rimms]

Ummm...

I build this patch with jubatus/jubatus-on-yarn#7.
I faced compile error:

[error] /path/to/jubaql-server/processor/src/main/scala/us/jubat/jubaql_server/processor/JubaQLService.scala:338: overloaded method value start with alternatives:
[error]   (aLearningMachineName: String,aLearningMachineType: us.jubat.yarn.common.LearningMachineType,aZookeepers: List[us.jubat.yarn.common.Location],aConfigFile: org.apache.hadoop.fs.Path,aResource: us.jubat.yarn.client.Resource,aNodeCount: Int,aBasePath: org.apache.hadoop.fs.Path)scala.concurrent.Future[us.jubat.yarn.client.JubatusYarnApplication] <and>
[error]   (aLearningMachineName: String,aLearningMachineType: us.jubat.yarn.common.LearningMachineType,aZookeepers: List[us.jubat.yarn.common.Location],aConfigString: String,aResource: us.jubat.yarn.client.Resource,aNodeCount: Int,aBasePath: org.apache.hadoop.fs.Path)scala.concurrent.Future[us.jubat.yarn.client.JubatusYarnApplication]
[error]  cannot be applied to (String, us.jubat.yarn.common.LearningMachineType, List[us.jubat.yarn.common.Location], String, us.jubat.yarn.client.Resource, Int, String)
[error]             JubatusYarnApplication.start(cm.modelName, jubaType, location, configJsonStr, resource, 2, applicationName)
[error]                                    ^
[error] one error found
[error] (compile:compileIncremental) Compilation failed
[error] Total time: 34 s, completed Jan 20, 2016 10:37:08 AM

[rimms]

Sorry, I used the wrong branch. 😓
I tried again, It was successful.

I'll continue to check this patch!