Add "eatmydata" by default

Change-Id: Ie83e0af0582d4ff8cfc5c20a7ccfdbb83d85c245
diff --git a/common/ubuntu_base.sh b/common/ubuntu_base.sh
index 6415a0a..6eca79f 100644
--- a/common/ubuntu_base.sh
+++ b/common/ubuntu_base.sh
@@ -39,7 +39,7 @@
 # Useful tools
 EXTRA_PKGS="byobu curl ethtool iputils-ping lsof strace tcpdump traceroute wget iptables"
 # Pretty tools
-EXTRA_PKGS="${EXTRA_PKGS} byobu htop tmux tree vim-nox mc"
+EXTRA_PKGS="${EXTRA_PKGS} byobu htop tmux tree vim-nox mc eatmydata"
 # Common prerequisites
 # growlvm.py dependencies
 GROWLVM_PKGS="python-jsonschema python-yaml"