fix Rand::getInteger() range overflow issue
test for Rand::getInteger() range overflow issue
use static:: ; improved test
Merge branch 'hotfix/5900'

Close #5900
Fixes #5894
Merge branch 'hotfix/rand-int' of https://github.com/denixport/zf2 into denixport-hotfix/rand-int
Improved the unit test for PHP_INT_MAX fix
Merge branch 'denixport-hotfix/rand-int' into develop