Mount sd partitions as noatime and fix df

skolo/raspberry-pi/finalize_image.yml

Index: skolo/raspberry-pi/finalize_image.yml
diff --git a/skolo/raspberry-pi/finalize_image.yml b/skolo/raspberry-pi/finalize_image.yml
index 4316d7b6e60fa840106ffc046707e4c99357f67b..3025ce2bb9839d93a0c98374fb8e8d96b1ba8f4b 100644
--- a/skolo/raspberry-pi/finalize_image.yml
+++ b/skolo/raspberry-pi/finalize_image.yml
@@ -14,10 +14,10 @@
   tasks:
     # Set up mounts in image's fstab
     - lineinfile: dest=/opt/raspberrypi/root/etc/fstab regexp=".*mmcblk0p2.*" state=absent
-    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p3  /b     ext4    defaults          0       2" state=present
-    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p5  /var   ext4    defaults          0       2" state=present
-    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p6  /tmp   ext4    defaults          0       2" state=present
-    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p7  /home/chrome-bot   ext4    defaults          0       2" state=present
+    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p3  /b     ext4    defaults,noatime          0       2" state=present
+    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p5  /var   ext4    defaults,noatime          0       2" state=present
+    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p6  /tmp   ext4    defaults,noatime          0       2" state=present
+    - lineinfile: dest=/opt/raspberrypi/root/etc/fstab line="/dev/mmcblk0p7  /home/chrome-bot   ext4    defaults,noatime          0       2" state=present
 
     # Swarming needs a /b file (which will have an SD card partition mounted to it.)
     - file: path=/opt/raspberrypi/root/b state=directory mode=0777