add e2e test for http #820
Merge branch 'master' into juwang-httpTest
make sure the app finishes successfully in the HelloHttpTest
Merge branch 'juwang-httpTest'
bugfix: make sure HelloHttpTest app is cloes by timeout
[maven-release-plugin] prepare release reef-project-0.5
[maven-release-plugin] prepare for next development iteration
Merge pull request #872 from Microsoft-CISL/release_0.5

Release 0.5
add variables HADOOP_CONF_DIR and YARN_CONF_DIR to the list of paths to
exclude from the uber-jar
Merge pull request #873 from Microsoft-CISL/sergiym_exclude_conf_dir

add variables HADOOP_CONF_DIR and YARN_CONF_DIR to exclusion list
merge from master