[BuildMonitor] fix 'BUILD-MONITOR(Pre_Snap_End)' job incorrect order issue

[BuildMonitor] fix 'BUILD-MONITOR(Pre_Snap_End)' job incorrect order issue

PROBLEM:
'BUILD-MONITOR(Pre_Snap_End)' job is triggered by 'pre-release-create' job

the triggering order of Sender('pre-release-create') is always correct
but sometimes the executing order of Receiver('BUILD-MONITOR') is incorrect

SOLUTION:
add new TriggerBuilder for 'Pre_Snap_End' at the bottom
to make sure to execute in correct order

Change-Id: I5bf19acd70485bff780bea8e9628fd41e4679f26
Signed-off-by: SungHun Hwang <sh0924.hwang@samsung.com>