Migrate collection test failure due to DS epochs

[lifflander]

Describe the bug
Requires 16 ranks.

5: idx=idx(4): val=117.2
6: idx=idx(5): val=146.5
7: idx=idx(6): val=175.8
8: idx=idx(7): val=205.1
9: idx=idx(8): val=234.4
10: idx=idx(9): val=263.7
11: idx=idx(10): val=293
12: idx=idx(11): val=322.3
13: idx=idx(12): val=351.6
15: migrateToNext: idx=idx(15)
15: idx=idx(15): val=1.897e-321
vt: Caught SIGSEGV signal: 11 
vt: [15] ------------------------------------------------------------------------------------------------------------------------
vt: [15] ------------------------------------------- Dump Stack Backtrace on Node 15 --------------------------------------------
vt: [15] ------------------------------------------------------------------------------------------------------------------------
vt: [15] 0   18  0xfff688 vt::debug::stack::dumpStack[abi:cxx11](int) + 40
vt: [15] 1   18  0xa2db6f vt::runtime::Runtime::handleSignalFailure() + 111
vt: [15] 2   18  0xa0ec50 vt::runtime::Runtime::sigHandler(int) + 1456
vt: [15] 3   18  0x7ffff642b400 killpg + 64
vt: [15] 4   18  0x9127aa vt::elm::ElementLBData::addTime(vt::TimeTypeWrapper const&) + 202
vt: [15] 5   18  0x912abf vt::elm::ElementLBData::stopTime() + 47
vt: [15] 6   18  0xfd4c2a vt::runnable::RunnableNew::end() + 42
vt: [15] 7   18  0xfd2923 vt::runnable::RunnableNew::run() + 1427
vt: [15] 8   18  0x14fb03c vt::sched::BaseUnit::execute() + 28
vt: [15] 9   18  0xff98bd vt::sched::Scheduler::runWorkUnit(vt::sched::PriorityUnit&) + 1181
vt: [15] 10  18  0xff6542 vt::sched::Scheduler::runSchedulerOnceImpl(bool) + 754
vt: [15] 11  18  0xff61da vt::sched::Scheduler::runSchedulerWhile(std::function<bool ()>) + 106
vt: [15] 12  18  0xa096bf vt::runtime::Runtime::~Runtime() + 111
vt: [15] 13  18  0xa0a69a vt::runtime::Runtime::~Runtime() + 10
vt: [15] 14  18  0x90dc95 vt::CollectiveAnyOps<(vt::runtime::eRuntimeInstance)0>::finalize(vt::runtime::RuntimeHolder) + 37
vt: [15] 15  18  0x90ebfa vt::finalize() + 42
vt: [15] 16  18  0x7e7f0b main + 1835
vt: [15] 17  18  0x7ffff6417555 __libc_start_main + 245
vt: [15] 18  18  0x7e7729 _start + 41
-------------------------------------------------------
Primary job  terminated normally, but 1 process returned
a non-zero exit code.. Per user-direction, the job has been aborted.
-------------------------------------------------------
--------------------------------------------------------------------------
mpiexec detected that one or more processes exited with non-zero status, thus causing
the job to be terminated. The first process to do so was:
  Process name: [[5294,1],15]
  Exit code:    1
--------------------------------------------------------------------------