Description of problem:
When DB is created without the UUID extension, the upgrade messes some scripts in the data directory.
The DB is engine_dao_tests and it was created as described here: https://github.com/oVirt/ovirt-engine#dao-tests

Version-Release number of selected component (if applicable):
master - commit efea806942d

How reproducible:
100%

Steps to Reproduce:
1. Create DB:
su - postgres -c "create database engine_dao_tests owner engine template template0 encoding 'UTF8' lc_collate 'en_US.UTF-8' lc_ctype 'en_US.UTF-8';"

2. run:
PGPASSWORD=engine \
  ./packaging/dbscripts/schema.sh \
    -c apply -u engine -d engine_dao_tests

Actual results:
Running upgrade sql script './packaging/dbscripts/upgrade/04_00_0070_enable_ballon_for_blank_template.sql'...
psql:./packaging/dbscripts/upgrade/04_00_0070_enable_ballon_for_blank_template.sql:44: ERROR:  insert or update on table "vm_device" violates foreign key constraint "fk_vm_device_vm_static"
DETAIL:  Key (vm_id)=(00000000-0000-0000-0000-000000000000) is not present in table "vm_static".
CONTEXT:  SQL statement "INSERT INTO vm_device (
            device_id,
            vm_id,
            type,
            device,
            address,
            boot_order,
            spec_params,
            is_managed,
            is_plugged,
            is_readonly,
            _create_date,
            _update_date,
            alias
            )
        SELECT uuid_generate_v1(),
            '00000000-0000-0000-0000-000000000000',
            'balloon',
            'memballoon',
            '',
            0,
            '{"model" : "virtio"}',
            true,
            true,
            true,
            'now',
            NULL,
            NULL"
PL/pgSQL function __temp_add_balloon_to_blank_if_not_present() line 11 at SQL statement
FATAL: Cannot execute sql command: --file=./packaging/dbscripts/upgrade/04_00_0070_enable_ballon_for_blank_template.sql

Expected results:
no error

Additional info:
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