add multi stress test for log alarm.
update stress test for log alarm.
Merge pull request #560 from axsh/feature-alarm-tests

Feature alarm tests
sysvinit: immediately stop vdc agents on stopping system.
Merge pull request #271 from axsh/feature-alarm

Feature alarm
Merge pull request #272 from axsh/fix-sysvinit-agent-stop-priority

sysvinit: immediately stop vdc agents on stopping system.
Merge pull request #273 from axsh/feature-volume-localstore

Small fixes and add a test case.
mussel: add --curl-opts option for extra curl options.
mussel: allow multiple depth hash argument like "--volumes[0][size]=50G"
fix ydump() for more complex yaml document.
add --volumes option to "mussel instance create"

For adding secondary blank volume:
  --volumes[0][size]=1G --volumes[0][volume_type]=local

For adding secondary volume from existing backup object:
  --volumes[0][backup_object_id]=bo-xxxxxx --volumes[0][volume_type]=local
add volume test cases for the instance with secondary volume.