svc 3par vnx controller add cpu count

[amanr032]

What this PR does / why we need it:
This PR adds additional field, cpu_count to supported drivers

Which issue this PR fixes(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)*: fixes #

The PR #940 not permitting rebase. This PR is to rebase and merge #940 using same commits. When this PR gets merged, the PR #940 will be closed

Special notes for your reviewer:

Release note:

[codecov]

Codecov Report

Merging #960 (03d94dc) into master (f2553bd) will decrease coverage by 0.01%.
The diff coverage is 68.18%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #960      +/-   ##
==========================================
- Coverage   70.56%   70.54%   -0.02%     
==========================================
  Files         192      192              
  Lines       23205    23217      +12     
  Branches     3568     3570       +2     
==========================================
+ Hits        16374    16378       +4     
- Misses       5712     5716       +4     
- Partials     1119     1123       +4     

Impacted Files	Coverage Δ
delfin/drivers/fujitsu/eternus/eternus_stor.py	88.81% <ø> (ø)
delfin/drivers/hpe/hpe_3par/ssh_handler.py	78.74% <54.54%> (-1.26%)	⬇️
...rivers/dell_emc/vnx/vnx_block/component_handler.py	64.08% <66.66%> (+0.01%)	⬆️
delfin/drivers/hpe/hpe_msa/ssh_handler.py	66.79% <66.66%> (-0.01%)	⬇️
delfin/drivers/hpe/hpe_3par/component_handler.py	74.50% <100.00%> (+0.12%)	⬆️
delfin/drivers/hpe/hpe_3par/consts.py	100.00% <100.00%> (ø)
delfin/drivers/ibm/storwize_svc/ssh_handler.py	74.15% <100.00%> (+0.03%)	⬆️
delfin/drivers/fake_storage/__init__.py	94.05% <0.00%> (-0.26%)	⬇️

[joseph-v]

LGTM

[skdwriting]

Please add proper PR description and information before merging it. @amanr032 @joseph-v

[skdwriting]

LGTM