Merge ~paride/utah/+git/utah:latecommand-fixes into utah:master

[Paride Legovini]

Fix the "latecommand" execution

Changes:
 * Add workaround for LP: #1836734
 * log-function: to not rely on /dev/log being present

[Jean-Baptiste Lallement (jibel)]

Successful run of bionic with the fix:
https://platform-qa-jenkins.ubuntu.com/view/Desktop/job/ubuntu-bionic-desktop-amd64-smoke-default/408/

[Jean-Baptiste Lallement (jibel)]

Tested with eoan too. Approved. Thanks!

review: Approve

diff --git a/templates/latecommand-wrapper.jinja2 b/templates/latecommand-wrapper.jinja2
index 4def4b0..7e759e8 100644
--- a/templates/latecommand-wrapper.jinja2
+++ b/templates/latecommand-wrapper.jinja2
@@ -1,5 +1,8 @@
 #!/bin/sh
 set -ex
+
+export PATH=$PATH:/usr/lib/ubiquity/compat
+
 {% include "log-function.jinja2" %}
 
 log "Running UTAH late command..."
diff --git a/templates/log-function.jinja2 b/templates/log-function.jinja2
index 91e69f4..1f8ec1f 100644
--- a/templates/log-function.jinja2
+++ b/templates/log-function.jinja2
@@ -1,3 +1,7 @@
 log() {
-    logger -s -t utah "$1" 2>>{{log_file}}
+    if test -e /dev/log ; then
+        logger -s -t utah "$1" 2>>{{log_file}}
+    else
+        printf "%s\n" "$1" >{{log_file}}
+    fi
 }