Use full binary path when invoking ip

Closes-bug: #2051111
Change-Id: I2a4df6121236379d88d0d7f2f7a888feab273003

Author: cityofships

docker/letsencrypt/letsencrypt-lego/letsencrypt-certificates.sh

@@ -171,7 +171,7 @@ if [ "${INTERNAL_SET}" = "true" ] || [ "${EXTERNAL_SET}" = "true" ]; then
     fi
 
 
-    if ip a | egrep -q "${LETSENCRYPT_VIP_ADDRESSES}"; then
+    if /usr/sbin/ip a | egrep -q "${LETSENCRYPT_VIP_ADDRESSES}"; then
         log_info "[${FQDN} - cron] This Letsencrypt-lego host is active..."
         if [ "${LETSENCRYPT_INTERNAL_FQDNS}" != "" ]; then
             log_info "[${FQDN} - cron] Processing domains ${LETSENCRYPT_INTERNAL_FQDNS}"

releasenotes/notes/fix-letsencrypt-ip-command-not-found-3c455acaf743409e.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixes the issue with command not found within letsencrypt-lego container.
+    `LP#2051111 <https://launchpad.net/bugs/2051111>`__