Release v0.4.4

Oshinko S2I images used by these templates
These templates use the following oshinko s2i images:

• radanalyticsio/radanalytics-pyspark:v0.4.4 found here
• radanalyticsio/radanalytics-java-spark:v0.4.4 found here
• radanalyticsio/radanalytics-scala-spark:v0.4.4 found here

Apache Spark version

The referenced oshinko s2i images use Apache Spark 2.2.0

Oshinko binary version

The referenced oshinko s2i images use oshinko binary release v0.4.4 found here

Summary of changes in templates

• add a generic job template
• add java templates for dc
• add a scala template for dc
• reorganize parameter sections to share ordering and descriptions
• add a Service object to java build-dc and dc templates
• add a Service object to scala build-dc and dc templates
• rename pyspark* templates to python*
• remove pysparkjob.json
• add a readme file to template dir
• update common e2e script with new template names