Presumably, test was disabled to get rid of distraction during development
and was forgotten.

Test was broken and commented out temporary back in 2011 in
cc950e9 commit, named `Temp commit`.
Commit was introduced in `AllDynamic` branch

Test is green both on the base commit of AllDynamic branch (10a202a) as well as on branch merge point (b251fce)

Done:
- Add test: child suite should obey threadCount parameter
- Move private stuff to bottom, add more details in error message

Before this, populateSuiteGraph method was ignoring any suite runner with child suites.
This leads to parallel suites not being executed with `randomize suite` option enabled

The method now add all nodes, including parents into the graph.

This test implied a requirement to exclude duplicating suite files from run.
For example, for suite graph like:

suite-parallel-1.xml suite-parallel-2.xml suite-parallel-2-1.xml suite-parallel-2-2.xml
                                |                                            |
                                |                                            |
                      ---------- ---------|                                  v
                      v                   v                         suite-parallel-2-2-1.xml
            suite-parallel-2-1.xml suite-parallel-2-2.xml
                                                     |
                                                     |
                                                     v
                                            suite-parallel-2-2-1.xml

a test expected 5 suites and 5 threads.

However, this test was excluded from TestNG unit tests since 2011, and broken somewhere later
on the timeline. Dropping mentioned requirement (i.e. leaving things as it is now),
since there's no complains on current behaviour by adjusting test expected results, to
8 expected suites and 8 threads.

- revert  suite order
- gradle autostyle apply
- set parallel mode recursively