[Development] Urgent: increase timeout for tst_qcomplextext

[Thiago Macieira]

It has failed now four times in the last 24 hours and is responsible for all 
failures that didn't fail with a network issue first.

I ran it on my machine and it took about a minute, while I was also compiling 
something else. Given the usual 30:1 slowness of the CI, it could take as much 
as half an hour there.

I tried to add a change to increase the timeout
	https://codereview.qt-project.org/233691
but Liang pointed out that my inspiration is a change by Rohan McGovern back 
in 2012:

dd3e4f1dbe8 tests/auto/network/access/qnetworkreply/test/test.pro (Rohan 
McGovern     2012-05-29 16:20:22 +1000  2) testcase.timeout = 600 # this test 
is slow

So it's highly unlikely that the current CI still obeys this setting. I'm 
assuming therefore that it's hidden somewhere non-obvious (= anywhere not next 
to the test itself) and therefore I'm just bugging you.

I'll create a P0 if my current integration fails again.
-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center