Review intellij git ignored files

Issue-ID: POLICY-2359
Signed-off-by: Bruno Sakoto <bruno.sakoto@bell.ca>
Change-Id: Iee0846d913798e33d5f745c2d4fc7c3a89304cd0
diff --git a/.gitignore b/.gitignore
index 7df831f..dbc83af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,12 @@
 .classpath
 .jupiter
 .pydevproject
-.idea
+
+# IntelliJ files
+.idea/
+**/*.iml
+overlays/
+
 target
 .metadata/
 ASTRAGateway/policyEngineLog.log