Install procps to the debian image

It brings ps, kill, pgrep, top, uptime, ... and a few more

Bug: N/A
Test: N/A
Change-Id: Iee87a4b90ece9705dbe8e32df95151ceb9c9187a
diff --git a/build/debian/fai_config/package_config/AVF b/build/debian/fai_config/package_config/AVF
index 7d86d41..1be57fe 100644
--- a/build/debian/fai_config/package_config/AVF
+++ b/build/debian/fai_config/package_config/AVF
@@ -1,4 +1,3 @@
 PACKAGES install
 
-# Just for testing
-tree
+procps