rephrase if..elif..else to case..esac

Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>

conf/type/__file/gencode-remote

@@ -25,7 +25,8 @@ destination="/$__object_id"
 state_should="$(cat "$__object/parameter/state")"
 exists="$(cat "$__object/explorer/exists")"
 
-if [ "$state_should" = "present" ]; then
+case "$state_should" in
+   present)
       # No source? Create empty file
       if [ ! -f "$__object/parameter/source" ]; then
          if [ "$exists" = "no" ]; then
@@ -47,8 +48,19 @@ if [ "$state_should" = "present" ]; then
       if [ -f "$__object/parameter/owner" ]; then
          echo chown \"$(cat "$__object/parameter/owner")\" \"$destination\"
       fi
-elif [ "$state_should" = "absent" ]; then
+   ;;
+
+   absent)
+
       if [ "$exists" = "yes" ]; then
          echo rm -f \"$destination\"
       fi
-fi
+    
+   ;;
+
+   *)
+      echo "Unknown state: $state_should" >&2
+      exit 1
+   ;;
+
+esac