Update .gitignore to include intellij specific files

Change-Id: I2ddf485cfaaac33f92aea44bbb6b4d17efc6727d
diff --git a/.gitignore b/.gitignore
index c13cf52..c42173e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,12 +2,14 @@
 /eclipse-out
 /target
 /.classpath
+/.idea
+/.ijwb
 /.project
 /.settings/org.maven.ide.eclipse.prefs
 /.settings/org.eclipse.m2e.core.prefs
 /.settings/org.eclipse.core.resources.prefs
 /.settings/org.eclipse.jdt.core.prefs
 /package-lock.json
-/task.iml
+**/*.iml
 /node_modules/
 /test/docker/gerrit/artifacts