len option in orm.StringField

 - max_len parameter replaced by len
 - existing calls with max_len updated to use len
 - also robottelo/test_orm.py updated
Merge pull request #1263 from alda519/orm_stringfield

len option in orm.StringField
Add tests for host-collection and content-host

Add tests for host-collection and content-host

Add tests for host-collection and content-host

Add tests for host-collection and content-host

Add tests for host-collection and content-host
replaced the name content_host to content_hosts in test_hostcollection
formatted the the code in host_collection.py
Merge pull request #1248 from tkolhar/test_cli

Added tests for host-collection content-host
Add API tests for compute profiles

Update the `ComputeProfile` class definition: add mixins for creation, reading
and deletion. Thoroughly test the relevant API endpoint.
Merge pull request #1278 from Ichimonji10/bz-1107714

Add API tests for compute profiles
Make Repository.read work correctly

Add `EntityReadMixin` to the `Repository` class. Override the `read` method,
allowing it to deal with the fact that issuing an HTTP GET to the API returns a
"product" hash containing an ID, but not a "product_id" integer as expected.

Test this change.

Update `EntityReadMixin` to deal with the fact that `OneToOneField`s and
`OneToManyField`s may contain either classes or strings naming classes.
Merge pull request #1277 from Ichimonji10/repository-read

Make Repository.read work correctly
repository tests using apis