[LLDB] Change pexpect timeout to 30 to 60

Test dependent on pexpect fail randomly with timeouts on Arm/AArch64 Linux
buildbots. I am setting pexpect timeout from 30 to 60.

I will revert this back if this doesnt improve random failures.

Author: omjavaid

lldb/packages/Python/lldbsuite/test/lldbpexpect.py

@@ -23,7 +23,7 @@ class PExpectTest(TestBase):
     def expect_prompt(self):
         self.child.expect_exact(self.PROMPT)
 
-    def launch(self, executable=None, extra_args=None, timeout=30, dimensions=None):
+    def launch(self, executable=None, extra_args=None, timeout=60, dimensions=None):
         logfile = getattr(sys.stdout, 'buffer',
                             sys.stdout) if self.TraceOn() else None
 

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

@@ -30,7 +30,7 @@ class SpawnBase(object):
     pid = None
     flag_eof = False
 
-    def __init__(self, timeout=30, maxread=2000, searchwindowsize=None,
+    def __init__(self, timeout=60, maxread=2000, searchwindowsize=None,
                  logfile=None, encoding=None, codec_errors='strict'):
         self.stdin = sys.stdin
         self.stdout = sys.stdout