[craftercms] Add new gradle task to run the scripts on src/test-suite for pretest check out

[luishernandezmonge]

Request

The new task should execute the next scripts on src/test-suite (according to with the platform where it will be executed):
-initialSetupCheckForTestScript.sh
-initialSetupCheckForTestScript.bat

How it would work

• Go to craftercms folder and we need to execute the pretest check (environment setup check) before the execution of automated test framework (here we need new task of gradle)
  Note:
  According to with the following ticket, we need the pre-test task:
  [test-suite] Automate the initial setup for the sanity test #1431

[cortiz]

@sumerjabri / @luishernandezmonge there is a small problem with these:
I can make the run but since it's already running in a Gradle task I need to discard any output since I'll have issues with the redirection of outputs that already are redirect (mostly because its a gradle task running gradle tasks from CLI)

There are 2 options:

1. discard any output
2. Make the scripts redirect it's outputs to File.

[sumerjabri]

@cortiz have it redirect to a logs folder with a test-suite subfolder
Make sure logs is in .gitignore of craftercms
Make sure logs and logs/test-suite are auto-created.
Make sure to overwrite the logs every run (so the logs can't grow) since these logs are transient in nature.

[cortiz]

Added the new task as selftest

[luishernandezmonge]

Checked on my side.
However, I will assign this to vita to double check and get feedback on this.
@alhambrav Please, can you check this ticket?

[alhambrav]

@luishernandezmonge checked on my side too, OS X is okay, in Windows, the command line window used to launch the gradlew selftest is closed at the end of the test (as I mentioned in our conversation)

[luishernandezmonge]

I'm working on this now

[luishernandezmonge]

Added the fix on the next PR: https://github.com/craftercms/test-suite/pull/291 @alhambrav Please, can you test this again?

[alhambrav]

@luishernandezmonge Verified okay on Windows and OS X.

[luishernandezmonge]

Verified as fixes and implemented, according with comment of above