* make sure downloaded logstashes use the new (arch independant files name)
* add specific privileged bootstrap script for debian 8 that is able to install java8 for this distro
* wrap the bootstrap scripts within the platform class, like this logic is in one specific place to select platform specific components
* add platform specific bootstrap file for sles-12 and also scripts to download latest logstash rpm version
* add custom bootstrap script for ubuntu-1404 to be sure it loads all ca certificates into the system
* make the necessary changes to compile with the new package system
* correct logstash path usage
* remove unnecessary dependancy to rake inside the acceptance test framework
* fix script execution under ubuntu environments, making sure it runs on bash
Fixes#5350
Also:
* Refactored the specs organization to make the resoning behind simplier,
introducing the idea of an artifact subject that it wraps the
interactions with the platform.
* Add methods to destroy, bootstrap and halt a list of machines either all of them or the ones listed under a given platform name.
* Introduced more clear namespacing in the rakefile.
* Updated the list of available platforms for acceptance testing, including latest ubuntu, oel, fedora, debian and suse versions
Fixes#5350
This change introduce a new command ci/ci_acceptance which is
responsable of building the packages, bootstraping the acceptance test
environment, launching the VMs and running the tests.
You can use the following command to target specific platform.
```
ci/ci_acceptance.sh all
ci/ci_acceptance.sh centos
ci/ci_acceptance.sh debian
```
This PR also add a new rake task to build all the artifacts in a single
run called rake artifact:all it make sure we only install the plugin
only once and make the build process faster.
Fixes#5350
