CDAP-984 fix long overflow bug that would cause stream events
to not get read.
CDAP-984 fix an edge condition where the stream data file reader
could start at a position less than the offset given.
Updated depenencies.
Updated dependency to common-http only.
Added dependency in deploy_pom.xml as well.
Added the properties section.
Merge pull request #810 from caskdata/hotfix/CDAP-984-fix-stream-mapreduce

CDAP-984 fix long overflow bug that would cause stream events
Fix docs using cdap-cli.sh execute
Merge pull request #813 from caskdata/feature/fix-cli-sql

Fix docs using cdap-cli.sh execute
Merge pull request #811 from caskdata/feature/pom-dependency

Updated pom dependencies in the PurchaseApp.
Merge branch 'release/2.6.0' into develop