Merge pull request #142 from Cxquan/0.4.0.0

#140 sometimes duplicate workloadId in run-history
Merge pull request #144 from Cxquan/0.4.0.0

Issue #143: loading archived workloads errors appear when some workloads...
small fixes to httpauth

- wrong bean name in plugin-context.xml
- HttpAuth must not dispose of the HTTP client instance
  as it stores it in the context for later use
avoid being challenged for each request

Setup and use an HTTP context with authentication cache
to avoid receiving a 401 challenge for each request
change cdmi-core to cdmi-util
change version shown on web to 0.4.0.0
add check to avoid stage name with delimiter ','
avoid NullPointerException which may occur during the small time window at stage end
Merge pull request #150 from cvedel/httpauth-fixes

small fixes to httpauth
Merge pull request #151 from cvedel/0.4.0.0

avoid being challenged for each request
add DELIMITER constant
Merge branch 'master' of http://github.com/intel-cloud/cosbench into 0.4.0.0
add cdmi related auth and storage configuration
add log message to print out object name in access
add cdmi related auth and storage configuration
Merge branch '0.4.0.0' of https://github.com/intel-cloud/cosbench into 0.4.0.0
add log message to print out objects in access
Merge branch '0.4.0.0' of http://github.com/intel-cloud/cosbench into 0.4.0.0
upgrade aws library to 1.6.12
Revert "upgrade aws library to 1.6.12"

This reverts commit e2d543fa43ae047d9e0e3a5fc4ff3e9015d7d081.