Increase timeout in pexpect to lower chances of tests failing under A…

…SAN.

If this doesn't actually work, I'll revert the change and just disable
the remaining thee pexpect tests under asan.

llvm-svn: 374375

lldb/third_party/Python/module/pexpect-4.6/pexpect/pty_spawn.py

@@ -640,7 +640,7 @@ def terminate(self, force=False):
             # this to happen. I think isalive() reports True, but the
             # process is dead to the kernel.
             # Make one last attempt to see if the kernel is up to date.
-            time.sleep(self.delayafterterminate)
+            time.sleep(self.delayafterterminate * 10)
             if not self.isalive():
                 return True
             else: