LIVEOAK-73 Provide file upload / download endpoint using Mongo GridFS as storage

A new module mongo-gridfs is an implementation of a REST endpoint for uploading, and downloading large files which are stored in a MongoDB instance.

To support the ability to not load entire HTTP bodies into memory several changes had to be made to container module.
 - Netty channel auto-read has been turned off for precise control of receiving read events.
 - HttpRequestBodyHandler has been introduced which handles HTTP body upload
 - changes have been made to support lazy body read by BinaryResources having to explicitly express interest in body
 - resource state is always an instance of LazyResourceState when going through complete pipeline via http

Some of TODOs, and possible TODOs:
 - download still loads a whole body into memory due to MyBinaryContentSink
 - further cleanup needed of ResourceState, and BinaryResource, and upload / download handling
 - updating existing blob resource
 - updating just metadata
 - additional file and directory metainfo
 - partial uploads / downloads to continue interrupted operations
 - transfer encoding to reduce size
 - multiconnection upload / download in conjunction with partial upload / download for better bandwidth utilization
Improved AclPolicyCheckResource to use async call for obtain target resource
Add netty dependency to spi module
Merge pull request #62 from mposolda/master

Improved AclPolicyCheckResource. Add netty dependency to spi module
Started testsuite
Changed read members test to read '/app' instead of '/'
Added more system props to surefire
Added readme for testsuite
Fix
Introduced RunWith to make it simpler to create tests
Added brief description on how to create tests
Pass phantom binary prop to surefire
Made testsuite use maven-failsafe instead of surefire