Currently the test makes more harm than use:
* It is too slow: two executions (with different Gradle versions)
take 5 minute on CI.
* It is unreliable: the test fails on CI for months
with insignificant violation of the memory growth limit.
After this change:
* the memory growth limit is increased;
* the test run count is decreased;
* changes the test to use separate project with minimal amount of classes
(we're not interested in compiler's memory leaks; only Gradle plugin specific ones);
Alexey Tsvetkov
0c12b0e5fb