HPCC-9569 ConfigMgr - remove extra roxie info

  - remove all RoxieSlaveProcess entries
  - remove duplicate RoxieServerProcess entries
  - add offset attribute
  - add redundancy option (slaveConfig)
  - rename tab PORTS
  - Remove redundancy dialog
  - could cleanup

Signed-off-by: Gleb Aronsky <gleb.aronsky@lexisnexis.com>
HPCC-9569 ConfigMgr - remove extra roxie info

Add 'Computer' column to server display table.

Fix regressions in xsd.

Move slave redundancy settings to 'Redundancy' tab.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4636 from richardkchapman/roxie_cleanup

Cleanup configmgr Roxie support

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>