Increase start timeout for ksck_remote-test
Increase start timeout for ksck_remote-test

This is causing flakiness on the test dashboard such as this:

F0720 18:08:41.857976 11124 ksck_remote-test.cc:246] Check failed: started_writing.WaitFor(MonoDelta::FromSeconds(1))
*** Check failure stack trace: ***
    @           0x73eccd  google::LogMessage::Fail()
    @           0x7431ad  google::LogMessage::SendToLog()
    @           0x74101b  google::LogMessage::Flush()
    @           0x741341  google::LogMessageFatal::~LogMessageFatal()
    @           0x7203d4  kudu::tools::RemoteKsckTest_TestChecksumSnapshotCurrentTimestamp_Test::TestBody()
    @          0x142f59b  testing::internal::HandleExceptionsInMethodIfSupported<>()
    @          0x1421847  testing::Test::Run()
    @          0x142191e  testing::TestInfo::Run()
    @          0x1421a57  testing::TestCase::Run()
    @          0x1425d57  testing::internal::UnitTestImpl::RunAllTests()
    @          0x142f16b  testing::internal::HandleExceptionsInMethodIfSupported<>()
    @          0x1420f30  testing::UnitTest::Run()
    @           0x73d141  main

This change reduces the failure rate under ASAN from 42/1000 (according
to dist_test) to something more along the lines of 4/1000.

Change-Id: I5735d4ad1af4cb2e0546f35e6157409cb392a36f
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/7201
Tested-by: jenkins
Reviewed-by: Adar Dembo <866ca730bfc7f544e3ebce604ceeba4879f23df0@cloudera.com>

andrwng/kudu,InspurUSA/kudu,andrwng/kudu,InspurUSA/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,helifu/kudu,InspurUSA/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,EvilMcJerkface/kudu,andrwng/kudu,andrwng/kudu,EvilMcJerkface/kudu,cloudera/kudu,cloudera/kudu,cloudera/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,andrwng/kudu,helifu/kudu,helifu/kudu,helifu/kudu,EvilMcJerkface/kudu,cloudera/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,andrwng/kudu,cloudera/kudu,helifu/kudu,andrwng/kudu,cloudera/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,InspurUSA/kudu,andrwng/kudu,helifu/kudu,helifu/kudu,helifu/kudu