Changes

[552027] Fixes an NPE wrt AttributeMonitor initialization
An incorrect ordering of Attribute Monitor initialization in 
ViatraQueryEventHandler resulted in NullPointerExceptions during EVM 
rule initialization, if the given rule had an UPDATE job added
(requiring the initialization of Attribute Monitors) and the 
corresponding query specification had at least a single match during 
rule initialization.
This change reverts the old initialization ordering and provides test 
cases to show the problematic points of the code.
Change-Id: I9f296c09370be4dc00da39f532a648277ff14b67 Signed-off-by:
Zoltan Ujhelyi <zoltan.ujhelyi@incquerylabs.com>