[WIP] Add integration fixes

[joseph-v]

What this PR does / why we need it: Add integration fixes

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

Special notes for your reviewer:

Release note:

[codecov[bot]]

Codecov Report

Merging #805 (bd3c410) into master (8cf0d7e) will decrease coverage by 0.09%. The diff coverage is 57.84%.

@@            Coverage Diff             @@
##           master     #805      +/-   ##
==========================================
- Coverage   70.57%   70.48%   -0.10%     
==========================================
  Files         180      180              
  Lines       18646    18703      +57     
  Branches     2750     2759       +9     
==========================================
+ Hits        13159    13182      +23     
- Misses       4645     4673      +28     
- Partials      842      848       +6     

Impacted Files	Coverage Δ
delfin/api/schemas/storage_capabilities_schema.py	100.00% <ø> (ø)
delfin/task_manager/manager.py	0.00% <0.00%> (ø)
delfin/task_manager/rpcapi.py	58.62% <ø> (+2.37%)	:arrow_up:
delfin/task_manager/scheduler/schedule_manager.py	66.66% <0.00%> (ø)
delfin/task_manager/subprocess_manager.py	0.00% <0.00%> (ø)
delfin/task_manager/subprocess_rpcapi.py	53.33% <ø> (ø)
delfin/drivers/dell_emc/vmax/client.py	69.57% <28.00%> (-3.78%)	:arrow_down:
delfin/task_manager/tasks/alerts.py	88.37% <33.33%> (-4.32%)	:arrow_down:
delfin/drivers/manager.py	64.61% <50.00%> (-0.47%)	:arrow_down:
delfin/drivers/dell_emc/vmax/rest.py	44.51% <64.00%> (+0.32%)	:arrow_up:
... and 12 more