* [JENKINS-22474] API Token does not require CSRF token
- in order to ease the use of the api, we are not requiring the request to have a crumb
- in terms of security it's not a problem normally since the CSRF attacks use the cookies and in case of API Token, it's session-less / cookie-less

* - adjust the license header

* - add test for basic authentication
- add test for login process

* - add test for form submission using ui (htmlunit), not just login form

* - modification requested by Jesse

* - pom.xml update to use the last version of jenkins-test-harness (with the token helper methods)
- beginning of the simplification of tests

* - using the try-with-resource approach to ease readability

* - using closure method now

* - add missing login transformation

* - add unit test

* - use withToken
- remove useless crumb for GET method
- add fail (otherwise the assert in catch is not as useful as it could be)

* another bunch of test cases

* - for HudsonTestCase, some additional modifications are required: changing the view / different type of management for the variable inside the views

* - small other tests

* - last batch for the login method

* - crumb is not more required since we are using API Token

* - converting auth to ApiToken to avoid crumb method

* - converting auth to ApiToken to avoid crumb method (second)

* - remove usage of closure aware methods

* - update the pom using the snapshot as adviced by Jesse
- modifications on other class to adapt to the last modifications in JTH

* - modifications requested during code review

* - also put back my changes to the conflicted file

* - correction of the merge :)

```
WARNING] Rule 3: org.apache.maven.plugins.enforcer.RequireUpperBoundDeps fai
Failed while enforcing RequireUpperBoundDeps. The error(s) are [
Require upper bound dependencies error for org.objenesis:objenesis:2.1 paths
+-org.jenkins-ci.main:test:2.92-SNAPSHOT
  +-org.mockito:mockito-core:1.10.19
    +-org.objenesis:objenesis:2.1
and
+-org.jenkins-ci.main:test:2.92-SNAPSHOT
  +-org.awaitility:awaitility:3.0.0
    +-org.objenesis:objenesis:2.5.1
```

Also reduce the time 250 ms (instead of 1 second previously) between
retries to hopefully reduce the test duration on quick enough setups,
and still degrade nicely on less performing ones.