Fix novaclient api

[Akm0d]

What does this PR do?

Port #49977 to master

[dwoz]

@Akm0d The linter is still failing here.

[Akm0d]

re-run full all

[Akm0d]

re-run full windows2016

[Akm0d]

re-run full windows2019

[Akm0d]

re-run full opensuse15

[codecov]

Codecov Report

Merging #55050 into master will increase coverage by 19.5%.
The diff coverage is 14.29%.

@@            Coverage Diff             @@
##           master   #55050      +/-   ##
==========================================
+ Coverage   18.81%    38.3%   +19.5%     
==========================================
  Files         817     1464     +647     
  Lines      178439   260114   +81675     
  Branches    38571    54963   +16392     
==========================================
+ Hits        33560    99618   +66058     
- Misses     142142   149195    +7053     
- Partials     2737    11301    +8564

Flag	Coverage Δ
#amazon1	38.3% <14.29%> (?)
#archlts	?
#centos7	?
#proxy	?
#py2	38.3% <14.29%> (+19.5%)	⬆️
#py3	?
#runtests	38.3% <14.29%> (+19.5%)	⬆️
#ubuntu1604	?
#zeromq	38.3% <14.29%> (+19.5%)	⬆️

Impacted Files	Coverage Δ
salt/utils/openstack/nova.py	14.66% <0%> (+0.02%)	⬆️
salt/modules/nova.py	77.78% <100%> (+44.98%)	⬆️
salt/transport/frame.py	27.28% <0%> (-50%)	⬇️
salt/modules/dummyproxy_service.py	46.16% <0%> (-35.89%)	⬇️
salt/utils/stringio.py	52.39% <0%> (-28.57%)	⬇️
salt/modules/dummyproxy_pkg.py	38.64% <0%> (-22.72%)	⬇️
salt/ext/six.py	54.84% <0%> (-14.15%)	⬇️
salt/grains/philips_hue.py	58.83% <0%> (-11.76%)	⬇️
salt/executors/docker.py	44.45% <0%> (-11.11%)	⬇️
salt/grains/chronos.py	66.67% <0%> (-11.11%)	⬇️
... and 1195 more

[dwoz]

2019 windows tests are passing:

05:57:53         OK (total=9282, skipped=1213, passed=8069, failures=0, errors=0)

merging pr