Created attachment 1309652 [details]
engine log

Description of problem:
Value too long for type character varying(50) for vds_interface.

vds_interface can't accept more then 50 characters.
When trying to attach network with more then 50 characters to host we failing with error:

2017-08-06 16:59:36,146+03 ERROR [org.ovirt.engine.core.dal.dbbroker.BatchProcedureExecutionConnectionCallback] (default task-8) [b91a072c-ee57-49d8-956a-084bc4076fc1] Can't execute batch: Batch entry 0 select * f
rom public.updatevds_interface(CAST ('' AS varchar),CAST (NULL AS varchar),CAST (NULL AS int4),CAST ('' AS varchar),CAST ('0' AS bool),CAST (? AS uuid),CAST ('0' AS bool),CAST ('legacy' AS varchar),CAST (NULL AS v
archar),CAST (NULL AS varchar),CAST ('ens1f0.166' AS varchar),CAST ('m1' AS varchar),CAST (NULL AS int4),CAST ('' AS varchar),CAST (0 AS int4),CAST (0 AS int4),CAST (? AS uuid),CAST ('ens1f0' AS varchar),CAST (166
 AS int4),CAST (1500 AS int4),CAST ('1' AS bool),CAST (NULL AS text),CAST (NULL AS varchar),CAST ('::' AS varchar),CAST (NULL AS int4),CAST (0 AS int4),CAST (NULL AS varchar),CAST (NULL AS int4),CAST (NULL AS varc
har)) as result was aborted.  Call getNextException to see the cause.
2017-08-06 16:59:36,147+03 ERROR [org.ovirt.engine.core.dal.dbbroker.BatchProcedureExecutionConnectionCallback] (default task-8) [b91a072c-ee57-49d8-956a-084bc4076fc1] Can't execute batch. Next exception is: ERROR
: value too long for type character varying(50)
  Where: SQL statement "UPDATE vds_interface
    SET addr = v_addr,


Version-Release number of selected component (if applicable):
4.2.0-0.0.master.20170803140556.git1e7d0dd.el7.centos

How reproducible:
100%

Steps to Reproduce:
1. Create network with more then 50 characters name
2. Try to attach the network to a host

Actual results:
db won't accept more then 50 characters

Expected results:
Must work

- Note that this bug must be cloned for 4.1.5 as well