Make autogenerated role names 2–30 chars long

By default, `StringField` generates strings 1–30 chars long. However, role names
must be at least two characters long. Increase the minimum length of
auto-generated role names.
Merge pull request #1316 from Ichimonji10/role-name-len

Make autogenerated role names 2–30 chars long
Skip test which checks HTTP status code

After creating a product, an HTTP 200 status code is received. This is OK, but
an HTTP 201 status code is preferable. List `Product` as one of the entities
that is affected by bugzilla bug 1118015, thus skipping the relevant test.
Properly test repository file uploads

Properly test whether it is possible to issue an HTTP POST request to
`api/v2/repositories/:id/upload_content`. Make the test for this feature submit
file data to the server in a correct manner.
Skip "old" API test, mention equivalent "new" test

The API test method `TestContentView.test_cv_publish_rh` in module
`test_contentview` is failing. Skip that test, as an equivalent test is in place
in module `test_contentview_v2`.
Merge pull request #1318 from Ichimonji10/test-repository

Properly test repository file uploads
Merge pull request #1317 from Ichimonji10/product-post-status-code

Skip test which checks HTTP status code
Merge pull request #1319 from Ichimonji10/test-contentview-publish

Skip "old" API test, mention equivalent "new" test
UI: Added BZ1139616 for the user tests
Merge pull request #1320 from kbidarkar/fix-userpasswd

UI: Added BZ1139616 for the user tests
Added locators, crud fns & tests for hw-models

hardware-model UI: Many fixes related to docstrings and naming conventions
Added first three content-view tests for redhat content
Added specific prepare method for rh_content tests
Merge pull request #1314 from kbidarkar/hw-models3

Added locators, crud fns & tests for hw-models
Add clients provisioning feature

The clients provisioning feature will allow create clients to be used on
tests that needs another machine to consume some content.

Also this improve the ssh module to allow specify the machine where to
run a command. Improved logging to show what machine the command was
executed (inspired by Fabric).

Finally was added tests for the new robotello.vm module and properly
added entries for added modules in the docs.

Bonus: refactored logging on the ssh module.
Merge pull request #1322 from elyezer/clients-provisioning

Add clients provisioning feature
updated life-cycle environment tests using factory
Merge pull request #1321 from sghai/env-test

Updated life-cycle environment tests using UI factory
Merge pull request #1315 from AdamSaleh/contentview_rh

Added first three content-view tests for redhat content
Refactor all API v2 docstrings

As API v1 tests will be rewritten the rafactor could happen when
updating the tests.