add nameserver information available on http server, add NameServerConfiguration
trivial change to triggger a build
add driver restart completed event
typo fixes
add restart completed handler to driver configuration
make restartcompleted extended time
typo fix
Merge branch 'master' of https://github.com/Microsoft-CISL/REEF into yingdac-restart-complete-handler
Merge pull request #972 from Microsoft-CISL/yingdac-restart-complete-handler

Add driver restart completed handler.

Tested on YARN and locally.
Merge remote-tracking branch 'origin' into yingdac-add-nameserverconfig
remove dependency of http server on nameserver, instead make all services registerable on http server
add java doc to nameserverconfig
address CR
Merge pull request #962 from Microsoft-CISL/yingdac-add-nameserverconfig

make nameserver information available on http server, add NameServerConfig
Merge branch 'master' of https://github.com/Microsoft-CISL/REEF into yingdac-allow-setting-of-jobsubmissiondirectory