CP-54481: support DMV RPU plugin

[chunjiez]

move DMV common code to python-libs because RPU plugin calls
these functions as well

[chunjiez]

add @rosslagerwall @DeliZhangX @stephenchengCloud @liulinC to have a review

[rosslagerwall]

I believe this code was previously reviewed. It looks fine to me in general but there are some complaints from the automated tests.

[chunjiez]

@rosslagerwall I remove some trailing whitespace, then the automated tests noise disappears.

[rosslagerwall]

@rosslagerwall I remove some trailing whitespace, then the automated tests noise disappears.

Unfortunately, I think that was just because the tests hadn't been rerun.

[chunjiez]

@rosslagerwall I remove some trailing whitespace, then the automated tests noise disappears.

Unfortunately, I think that was just because the tests hadn't been rerun.

Hi Ross, the README.md is incorrect (INSTALL.md is missing), I trid to call tox/pytest to run unit tests, but it failed. Do you have python-libs code in your local box? If so, could you please check your local code copy contains INSTALL.md or not?

[coveralls]

Pull Request Test Coverage Report for Build 17116017958

Details

• 159 of 183 (86.89%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 83.358%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
xcp/dmv.py	159	183	86.89%

Totals
Change from base Build 17094350726:	0.2%
Covered Lines:	2790
Relevant Lines:	3347

---

💛 - Coveralls

[codecov]

Codecov Report

❌ Patch coverage is 86.88525% with 24 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
xcp/dmv.py	86.8%	24 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #157     +/-   ##
========================================
+ Coverage    83.1%   83.3%   +0.2%     
========================================
  Files          22      23      +1     
  Lines        3164    3347    +183     
========================================
+ Hits         2631    2790    +159     
- Misses        533     557     +24     

Files with missing lines	Coverage Δ
xcp/dmv.py	86.8% <86.8%> (ø)