Change inventory table format

After working with inventory tables for some time found many issues and
decided to change inventory table format in order tame it easier to work
with it.

New inventory table format looks like this:

    d | r | b | m | property   | source     | type    | ref         | level | access | title | description
    datasets/test/data         |            |         |             |       |        |       |
      | sqlite                 |            |         |             |       |        |       |
      |   |                    |            |         |             |       |        |       |
      |   |   | city           | CITY       |         | id          |       |        |       |
      |   |   |   | id         | ID         | integer |             | 4     |        |       |
      |   |   |   | country_id | COUNTRY_ID | ref     | country[id] | 4     |        |       |
      |   |   |   | name       | NAME       | string  |             | 3     |        |       |
      |   |                    |            |         |             |       |        |       |
      |   |   | country        | COUNTRY    |         | id          |       |        |       |
      |   |   |   | id         | ID         | integer |             | 4     |        |       |
      |   |   |   | area       | AREA       | integer |             | 3     |        |       |
      |   |   |   | name       | NAME       | string  |             | 3     |        |       |

Issue: #838
1 job for master in 2 minutes and 43 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #456114720
test

00:02:43

6.0%
 
Name Stage Failure
failed
test Test
lodam/services/sqlschema.py      51     42    18%   27-40, 44-67, 77-80, 87-108
-----------------------------------------------------------
TOTAL 642 602 6%

=========================== short test summary info ============================
ERROR tests/test_manifest.py::test_manifest - sqlalchemy.exc.OperationalError...
!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!
=============================== 1 error in 0.41s ===============================
ERROR: Job failed: exit code 1