add the option to have an external installation for the logstash installation

Fixes #1
add scripting to run the integration testing in regular basis

Fixes #1
make the scripts use also the LOGSTASH_HOME env variable

Fixes #1
ammend previous commit

Fixes #1
added some PR love by the reviwer

Fixes #1
fix version maching plus the directory scrapping

Fixes #1
ES loader cleanup, including some date format improvements and unique events control

Fixes #1
fix the kpi and type to not being analyzed

Fixes #1
clean up loader requirements

Fixes #1
improve logging

Fixes #1
add more spaces in parameters calls

Fixes #1