[VOL-5040] - Build and deploy bng for v2.12

pom.xml
-------
  o Upgrade sadis v5.11.1
  o Upgrade olt v2.5.4
  o Upgrade maven plugins: spotbugs-maven-plugin & findsecbugs-plugin

Change-Id: I655a3bd9a5a1357bc0b811dff15c176aa521a8b7
1 file changed