MacLessManager Error Crash

[unseenmagik]

Describe the bug
When running PR16 for MacLessManager, the UIC stops after a period of time and needs a manual restart.
To confirm, this has been setup on two mac's. Identical setup and the same error on both.

To Reproduce
Steps to reproduce the behavior:

1. Setup PR16
2. Run PR16 MacLessManager
3. Wait for the UIC to crash
4. See error

Expected behavior
UIC to not crash

Screenshots / Error
2020-06-10 17:57:10.518 MacLessManager[68198:1379259] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Failed to set posix_spawn_file_actions for fd -1 at index 0 with errno 9'

(
	0   CoreFoundation                      0x00007fff32defb79 __exceptionPreprocess + 256
	1   libobjc.A.dylib                     0x00007fff5d5633c6 objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff32def9ab +[NSException raise:format:] + 193
	3   Foundation                          0x00007fff35001a88 -[NSConcreteTask launchWithDictionary:error:] + 3172
	4   MacLessManager                      0x00000001046e5084 $sSo6NSTaskC8ShellOutE10launchBash33_839723A297212BDF262C1834C3E29C1FLL4with12outputHandle05errorN0S2S_So06NSFileN0CSgAKtKF + 1844
	5   MacLessManager                      0x00000001046e4726 $s8ShellOut05shellB02to9arguments2at7process12outputHandle05errorI0S2S_SaySSGSSSo6NSTaskCSo06NSFileI0CSgANtKF + 1094
	6   MacLessManager                      0x00000001046e071b $s14MacLessManagerAAC13getAllDevices33_8B84F0D64675BF433CA51B1096360C7DLLSDyS2SGyKF + 875
	7   MacLessManager                      0x00000001046dc9fb $s14MacLessManagerAAC3run33_8B84F0D64675BF433CA51B1096360C7DLLyyF + 507
	8   MacLessManager                      0x00000001046dc38b $s14MacLessManagerAAC5startyyFyycfU_ + 27
	9   MacLessManager                      0x00000001046dc3cd $sIeg_IeyB_TR + 45
	10  libdispatch.dylib                   0x00007fff5ecda5f8 _dispatch_call_block_and_release + 12
	11  libdispatch.dylib                   0x00007fff5ecdb63d _dispatch_client_callout + 8
	12  libdispatch.dylib                   0x00007fff5ece18e0 _dispatch_lane_serial_drain + 602
	13  libdispatch.dylib                   0x00007fff5ece2396 _dispatch_lane_invoke + 385
	14  libdispatch.dylib                   0x00007fff5ecea6ed _dispatch_workloop_worker_thread + 598
	15  libsystem_pthread.dylib             0x00007fff5ef1b611 _pthread_wqthread + 421
	16  libsystem_pthread.dylib             0x00007fff5ef1b3fd start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6``````

**System**
 - Running in docker: [yes|no] NO
 - Docker Engine Version: [if applicable, e.g. 19.0] N/A
 - Host OS: [e.g. Ubuntu 18.04] Ubuntu 18.04
 - RDM Version [e.g. 2.0.0] v1.12.0

**Client**
 - OS: [e.g. Any, iOS, Windows] Mac OS Mojave 10.14
 - Browser [e.g. Chrome, Safari] Terminal for UIC

**Additional context**
Add any other context about the problem here.

[123FLO321]

#16 is still a pr. please use discussion there