Update initrd with IPv6 improvements

Patching content from upstream dracut for IPv6 improvements:
8061a43284
031e2f7bb8

These changes are present in the Centos8 initrd, but not Centos7.

The changes include:
- Addressing a race condition in the IPv6 DAD handling:
  https://bugzilla.redhat.com/show_bug.cgi?id=1765013
- Add a check for router advertise route (proto ra) prior to
  continuing with dracut init

Change-Id: I9021b3c3af639caed81d085eb889ed2d1bf98380
Story: 2009009
Task: 42709
Signed-off-by: Don Penney <don.penney@windriver.com>

build-tools/make-installer-images.sh

@@ -114,6 +114,45 @@ rm -f ./usr/lib/udev/rules.d/71-biosdevname.rules ./usr/sbin/biosdevname
 exit
 EOF
 
+echo "-->patch usr/lib/net-lib.sh with IPv6 improvements from newer dracut"
+patch usr/lib/net-lib.sh <<EOF
+--- ../initrd.orig/usr/lib/net-lib.sh   2020-08-18 19:37:17.063163840 -0400
++++ usr/lib/net-lib.sh  2020-08-19 09:47:15.237089800 -0400
+@@ -645,7 +645,8 @@
+     timeout=\$((\$timeout*10))
+
+     while [ \$cnt -lt \$timeout ]; do
+-        [ -z "\$(ip -6 addr show dev "\$1" scope link tentative)" ] \\
++        [ -n "\$(ip -6 addr show dev "\$1" scope link)" ] \\
++            && [ -z "\$(ip -6 addr show dev "\$1" scope link tentative)" ] \\
+             && return 0
+         [ -n "\$(ip -6 addr show dev "\$1" scope link dadfailed)" ] \\
+             && return 1
+@@ -662,7 +663,9 @@
+     timeout=\$((\$timeout*10))
+
+     while [ \$cnt -lt \$timeout ]; do
+-        [ -z "\$(ip -6 addr show dev "\$1" tentative)" ] \\
++        [ -n "\$(ip -6 addr show dev "\$1")" ] \\
++            && [ -z "\$(ip -6 addr show dev "\$1" tentative)" ] \\
++            && [ -n "\$(ip -6 route list proto ra dev "\$1" | grep ^default)" ] \\
+             && return 0
+         [ -n "\$(ip -6 addr show dev "\$1" dadfailed)" ] \\
+             && return 1
+@@ -679,8 +682,9 @@
+     timeout=\$((\$timeout*10))
+
+     while [ \$cnt -lt \$timeout ]; do
+-        [ -z "\$(ip -6 addr show dev "\$1" tentative)" ] \\
+-            && [ -n "\$(ip -6 route list proto ra dev "\$1")" ] \\
++        [ -n "\$(ip -6 addr show dev "\$1")" ] \\
++            && [ -z "\$(ip -6 addr show dev "\$1" tentative)" ] \\
++            && [ -n "\$(ip -6 route list proto ra dev "\$1" | grep ^default)" ] \\
+             && return 0
+         sleep 0.1
+         cnt=\$((\$cnt+1))
+EOF
+
 echo "--> Rebuild the initrd"
 if [ -f $output_dir/new-initrd.img ]; then
     mv -f $output_dir/new-initrd.img $output_dir/initrd.img-backup-$timestamp

tox.ini

@@ -30,7 +30,7 @@ commands =
          -not -name \*~                       \
          -not -name \*.md                     \
          -name \*.sh                          \
-         -print0 | xargs --no-run-if-empty -0 bashate -v -e 'E*' -i E006,E010"
+         -print0 | xargs --no-run-if-empty -0 bashate -v -e 'E*' -i E003,E006,E010"
   bash -c "find {toxinidir}/build-tools       \
          -not \( -type d -name .?\* -prune \) \
          -type f                              \