VM-alloc vmbb2

+- Undone changes for:
initializePMCandidates(): set PMIterator and resetCandidates()
BnBAllocator(): set initialPM by PM.id
preprocess(): is now counted as execution time
correct counting of active PMs

+- Undone changes for:
initializePMCandidates(): set PMIterator and resetCandidates()
BnBAllocator(): set initialPM by PM.id
preprocess(): is now counted as execution time

+- Example configuration

+ 1 Minute offset for the time interval to get data for more vm

+ read past allocation from database - as initial allocation for the next instance
+ first fit allocate new vm
+ getLastAllocationVMs(), getLastAllocationPMs(): Gets the last allocation from database
+- insertAllocation(): Insert also inactive pm

+ updateFf(): Allocate (new) unallocated VMs with first fit allocation.

+- Undone changes for correct counting of active PMs.

+ index memoryUsage on inputData
+ index cpuUsage on inputData
+ index vmId on inputData

+ Create test data from vmbb (revision 4) logfile. Only for testing.

+- selectVms(): Resources: cpuUsage and memoryUsage. Double values are casted to integer values. Demand must be > 0.
+- insertAllocation(): Error: Values of VM and PM got mixed.