Merge pull request #145 from dpoirier/use_if_exists_with_import

Use --if-exists with import

tests/service_import.bats

@@ -32,6 +32,6 @@ teardown() {
   export ECHO_DOCKER_COMMAND="true"
   run dokku "$PLUGIN_COMMAND_PREFIX:import" l < "$PLUGIN_DATA_ROOT/fake.dump"
   password="$(cat "$PLUGIN_DATA_ROOT/l/PASSWORD")"
-  assert_output "docker exec -i dokku.postgres.l env PGPASSWORD=$password pg_restore -h localhost -cO -d l -U postgres -w"
+  assert_output "docker exec -i dokku.postgres.l env PGPASSWORD=$password pg_restore -h localhost -cO --if-exists -d l -U postgres -w"
 }