Changes:
- Added new Investigator 'ManagementIPSystemVMInvestigator' that checks if Vm is alive only for System VM's that have a management IP address.
- If no management IP is found, ping test cannot be done, so this investigator would return null in that case.
- Current implementation InvestigatorImpl is renamed as 'UserVmDomRInvestigator' and does the ping test for user VMs only.
- Corrected the ping test code that was checking a hard-coded string. Now if the ping answer is negative, we just return null
- Added the new investigator to components.xml
prachi