Warning if path is not below /home/groups

[jochenkoschorke]

- group_config:

   - ac-testgroup-35: 
      - path: /var/ac-test

- ace_config:

   - ac-testgroup-35:
       - path: /content/geometrixx/en/ac-testing/area-01
         permission: allow
         privileges: jcr:all

leeds to
Installation triggered: Wed Apr 23 13:35:40 CEST 2014

2014-04-23 13:35:40.204: start merging configuration data from: /var/ac-tool/project-ac-tool-test-1/confix.txt
2014-04-23 13:35:40.205: start installation of merged configurations
2014-04-23 13:35:40.326: finished installation of groups configuration without errors!
2014-04-23 13:35:40.351: finished (transient) installation of access control configuration without errors!
2014-04-23 13:35:40.367: persisted changes of ACLs
2014-04-23 13:35:40.37: saved history in node: /var/statistics/achistory/history_1398252940368
2014-04-23 13:35:40.386: saved installed configuration files under : /var/statistics/achistory/history_1398252940368/installedConfigs

Execution time: 164 ms

Success: true

but the resulting path is /home/groups/var/ac-test
even worse if group is allready existing:

Installation triggered: Wed Apr 23 13:40:59 CEST 2014

2014-04-23 13:40:59.591: start merging configuration data from: /var/ac-tool/project-ac-tool-test-1/confix.txt
2014-04-23 13:40:59.593: start installation of merged configurations
2014-04-23 13:40:59.725: found change of intermediate path:
existing group: ac-testgroup-35 has intermediate path: /home/groups/var/ac-test
group from config: ac-testgroup-35 has intermediate path: /var/ac-test
recreated group with new intermediate path!
2014-04-23 13:40:59.735: finished installation of groups configuration without errors!
2014-04-23 13:40:59.756: finished (transient) installation of access control configuration without errors!
2014-04-23 13:40:59.772: persisted changes of ACLs
2014-04-23 13:40:59.775: saved history in node: /var/statistics/achistory/history_1398253259773
2014-04-23 13:40:59.792: saved installed configuration files under : /var/statistics/achistory/history_1398253259773/installedConfigs

Execution time: 182 ms

Success: true

Expected behaviour: An explicit Warnig should be rendered

[jochenkoschorke]

Added missing home/groups path prefix to group path from bean.