ZP-1029 add instructions if z-push-admin failed. Released under the Affero GNU...

ZP-1029 add instructions if z-push-admin failed. Released under the Affero GNU General Public License (AGPL) version 3.

added proof of concept code. will currently not be executed since fixstates does not produce an exit code of != 0

build/deb/debian.z-push-common.postinst

@@ -6,6 +6,13 @@
 case "$1" in
     configure)
         /usr/local/sbin/z-push-admin -a fixstates
+        if [ $? -ne 0 ]; then
+            YELLOW='\033[0;33m'
+            NC='\033[0m' # No Color
+            echo -e "${YELLOW}When upgrading from an earlier version you need to run 'z-push-admin -a fixstates'.\n
+It seems the execution on setup has failed (see error above). Please fix the issue and run the command manually.\n
+More information at https://wiki.z-hub.io/x/R4Ea${NC}\n"
+        fi
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)