Bump version to 5.0.0
Add link ZP volume to default ZP svc def
Change link isntalled ZPs to be in /var/zenoss

This it to accommodate for working on a control-center environment,
where linekd packs can be shared on DFS
Merge pull request #641 from zenoss/feature/addLinkZPDirToDefaultZPTemplate

Feature/add link zp dir to default zp template
Merge branch 'release/5.0.0' into develop

* release/5.0.0:
  Change link isntalled ZPs to be in /var/zenoss
  Add link ZP volume to default ZP svc def
  Bump version to 5.0.0