[lldb][test] TestQuitWithProcess: Increase timeout to fix ARM flakiness (#181660)
TestQuitWithProcess.py is randomly failing on Arm Linux buildbot. The
test validates LLDB's ability to quit cleanly killing active processes
with a timeout value set to 15 seconds which could be insufficient for
any resource limited platforms under heavy load.
This patch increase the timeout to 30 seconds to accommodate any
resource limits.
https://lab.llvm.org/buildbot/#/builders/18/builds/24801