Initial skeleton of highly available streaming client that registers
slops
Added functionality to stream slops.
SlopWrappingStreamingClient is a wrapper around the StreamingClient
which expects a set of faultynodes and streams Slops for those nodes

Added integration tests to test this functionality see:
SlopStreamingTest
Refactoring based on review feedback
Major changes:
renamed:
src/java/voldemort/client/protocol/admin/StreamingClient.java ->
src/java/voldemort/client/protocol/admin/BaseStreamingClient.java

 renamed:
 src/java/voldemort/client/protocol/admin/SlopWrappingStreamingClient.java
-> src/java/voldemort/client/protocol/admin/StreamingClient.java
Use HintedHandoff to route the key instead of dupliating code