3837 add rake tasks to run every module only

[stbnrivas]

Closes #3837

:v: What does this PR do?

add new rake task to run test by every gobierto module

:mag: How should this be manually tested?

bin/rails -T # should show new task like:

bin/rails test:gobierto_admin
...

[ferblape]

What's pending here?

[stbnrivas]

I am not sure about:

• namespace location...
• use the full name of module example: gobierto_admin
• if I will better use a gem like Open3 instead of puts

[ferblape]

• namespace location...

Yes, use a new file (test.rake?). Let's have a single namespace per file

• use the full name of module example: gobierto_admin

But you are already using the whole module name, right?

• if I will better use a gem like Open3 instead of puts

The experience would be better if the output is shown instantly so Open3 might help, but don't lose too much time

[stbnrivas]

ok, I changed :

• move to lib/test.rake
• the command to output
• add --fail-fast as params to task with

bin/rails test:gobierto_plans[true]

I will include Open3 next time