Fix the create instance error

[warewang]

I create a flavor in nova, but I use flavor to create the db_instance error.

root@ubuntu:/home/devstack# nova flavor-list
+--------------------------------------+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+--------------------------------------+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True |
| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
| 913236e8-767a-4e64-bdb1-46ae625103ec | m1.middle | 512 | 5 | 0 | | 1 | 1.0 | True |
+--------------------------------------+-----------+-----------+------+-----------+------+-------+-------------+-----------+

root@ubuntu:/home/devstack# trove create vm_db_instance 913236e8-767a-4e64-bdb1-46ae625103ec --size 2 --databases mytest
ERROR: Validation error: instance['flavorRef'] u'913236e8-767a-4e64-bdb1-46ae625103ec' is not valid under any of the given schemas; u'913236e8-767a-4e64-bdb1-46ae625103ec' does not match 'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\(\\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+'; u'913236e8-767a-4e64-bdb1-46ae625103ec' is too long; u'913236e8-767a-4e64-bdb1-46ae625103ec' is not of type 'integer' (HTTP 400)
sudo -i