Set RAPIDS_NO_INITIALIZE at the top of CUDAWorker/LocalCUDACluster

[pentschev]

Fix issue with dask-cuda-worker initializing on GPU 0 only.

[codecov-commenter]

Codecov Report

Merging #379 into branch-0.15 will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           branch-0.15     #379      +/-   ##
===============================================
- Coverage        60.13%   60.10%   -0.03%     
===============================================
  Files               17       17              
  Lines             1342     1336       -6     
===============================================
- Hits               807      803       -4     
+ Misses             535      533       -2     

Impacted Files	Coverage Δ
dask_cuda/benchmarks/utils.py	0.00% <ø> (ø)
dask_cuda/initialize.py	92.59% <ø> (-0.75%)	⬇️
dask_cuda/utils.py	87.31% <ø> (-0.10%)	⬇️
dask_cuda/cuda_worker.py	72.50% <100.00%> (ø)
dask_cuda/local_cuda_cluster.py	83.52% <100.00%> (ø)

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[quasiben]

@peter pointed out his problem probably happens because dask will import cuDF serialization code

[pentschev]

rerun tests

[jakirkham]

Thanks Peter! 😄

[pentschev]

Thanks for reviews everyone! 😄