- RQ Dashboard shall only be accessible to admin users
- "REDIS_URL" is hard-coded in rq-dashboard (had to rename RQ_REDIS_URL)

The "REDIS_URL" variable is hard-coded in RQ Dashboard.

REDIS_URL was used by redis_store that is passed to Flask Session.
The url variable used by Flask-Redis can be changed by setting the
config_prefix.

1. Rename REDIS_URL to SESSION_REDIS_URL
2. Rename redis_store to session_redis_store
3. Use "SESSION_REDIS" config_prefix to initialize session_redis_store

This makes it clear that this Redis instance is used by Flask-Session.
REDIS_URL will be used for RQ.

This is to be used for stack of switches only

- a stack_member is linked to an host (device_type has to be "Switch")
- a stack_member is an integer between 0 and 9 (included) or can be None
- the couple (host_id, stack_member) must be unique

JIRA INFRA-267

- rename "Virtual" to "Virtual Machine"
- add "Virtual IOC"
- add several physical devices (Switch, Industrial PC IOC, MicroTCA,
  VME, PLC)

Add .pytest_cache/ directory

1. When we have a stack of switches, the same IP is associated to several
   switches
2. Move the items <-> host assocation to the item create/edit page

JIRA INFRA-267

The interface name doesn't need to be displayed in the form as we force
it to the hostname.

We set the interface name to the hostname when submitting the form.
This fixes the copy/paste issue with the mouse that didn't trigger the
keyup event.

JIRA INFRA-287

JIRA INFRA-281

If an error is raised when submitting the form, we should keep the IP
that was entered.

JIRA INFRA-285

The class "is-invalid" is removed on all type=text input
on keyup event.

JIRA INFRA-285

The sorting of the models was done in the utils.get_model_choices
funtion but a specific query was passed to not display admin_only networks.

The sorting is now done even when passing a specific query to
get_model_choices.

JIRA INFRA-284

- create many-to-many relationships between the user table and
attributes tables (manufacturer / model / location / status / action)
- add a checkbox as the first column of the attributes table to add or
remove an attribute to the favorites
- add a new page to display the favorite attributes

JIRA INFRA-283

On page load we have to check the machine type to enable / disable
item_id and check / uncheck the random MAC

JIRA INFRA-281

JIRA INFRA-277

"type" field on host replaced with foreign key "machine_type_id"

JIRA INFRA-281

The description is only shown if not empty

JIRA INFRA-280

Many new models are not descriptive (part number) and being able to search in the
model description should help.

We should reserve 10 addresses at the beginning and 5 at the end.
Meaning for a /24 network, we should start at 11 and end at 249.

Some tests were hanging due to the addresses generated by
factory.Faker('ipv4', network=True)

Replace it by a Sequence of /24 addresses

pytest-factoryboy 1.3.2 required factory_boy < 2.9
Newer version (2.0.1) requires:
- pytest >= 3.3.2
- factory_boy >= 2.10.0

So both pytest and factory_boy could be updated as well

cnames entered in CSEntry are just names not FQDN
See d1f500238c5798259f536bb80fa93aba2d493b97

This reverts commit 920b9bc5.

Allowing cnames with different domains makes things too complex.
The domain shall be the same as the host.

See INFRA-242

Factory boy doesn't reset the sequence between tests.
We use a sequence to generate unique IP addresses in the InterfaceFactory.
When the sequence number gets too high, the IP is not in the network
range anymore.

To fix the issue, we reset the sequence number when initializing a new
session.

Allow to filter by domains

Fix INFRA-242

Having the username in the API is more useful than the display name.
We keep the display name in the UI.

Fix INFRA-241

Create unit test and coverage report with pytest

Not everyone at ICS is part of the 'ICS Employees' AD group.
We have to accept 'ICS Consultants' as well.

The CSENTRY_LDAP_GROUPS settings now takes a list of groups instead of
just one.

Remove unused is_member_of_all_groups method.

Fixes INFRA-225

Fixes INFRA-224

Allow to easily print the actions