Fix IPA execution issues due to lack of entropy

While running TinyIPA stable/stein images in KVM virtual machines with
Tenks, we noticed that IPA would start but not execute further, which
appeared to be caused by a lack of entropy.

This patch installs haveged, a simple entropy daemon [1], into the
tinyipa ramdisk and starts it on boot, which resolves the issue.

While this problem was reproduced reliably with stable/stein and not
seen with stable/train or stable/rocky images, we will start running
haveged in all versions, for consistency. It adds less than 20 KiB to
the ramdisk.

[1] http://www.issihosts.com/haveged/

Change-Id: I7d47b7828733cc03c1ed6c370c451465a6d492b6
Story: 2006911
Task: 37554

tinyipa/build_files/bootlocal.sh

@@ -10,11 +10,17 @@ date
 export HOME=/root
 
 # Start SSHd
-if [ -f /usr/local/etc/init.d/openssh ]; then
+if [ -x /usr/local/etc/init.d/openssh ]; then
     echo "Starting OpenSSH server:"
     /usr/local/etc/init.d/openssh start
 fi
 
+# Start haveged
+if [ -x /usr/local/sbin/haveged ]; then
+    echo "Starting haveged entropy daemon:"
+    /usr/local/sbin/haveged
+fi
+
 # Maybe save some RAM?
 #rm -rf /tmp/builtin
 

tinyipa/build_files/finalreqs.lst

@@ -4,6 +4,7 @@ dmidecode.tcz
 gdisk.tcz
 glib2.tcz
 file.tcz
+haveged.tcz
 hdparm.tcz
 iproute2.tcz
 ipv6-4.14.10-tinycore64.tcz
@@ -16,4 +17,4 @@ raid-dm-4.14.10-tinycore64.tcz
 scsi-4.14.10-tinycore64.tcz
 smartmontools.tcz
 udev-lib.tcz
-util-linux.tcz
+util-linux.tcz