Add disk label

[coignetp]

What does this PR do?

Automatically add disk label as a tag

Motivation

Internal request

Additional Notes

Review checklist (to be filled by reviewers)

• PR title must be written as a CHANGELOG entry (see why)
• Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• PR must have changelog/ and integration/ labels attached
• Feature or bugfix must have tests
• Git history must be clean
• If PR adds a configuration option, it must be added to the configuration file.

[AlexandreYang]

Looks good. Just few minor comments.

[codecov]

Codecov Report

Merging #3953 into master will decrease coverage by 9.77%.
The diff coverage is 73.33%.

@@            Coverage Diff             @@
##           master    #3953      +/-   ##
==========================================
- Coverage   86.98%   77.21%   -9.78%     
==========================================
  Files         732       11     -721     
  Lines       37657      610   -37047     
  Branches     4375       80    -4295     
==========================================
- Hits        32757      471   -32286     
+ Misses       3755      122    -3633     
+ Partials     1145       17    -1128

[codecov]

Codecov Report

Merging #3953 into master will increase coverage by 5.69%.
The diff coverage is 89.47%.

@@            Coverage Diff             @@
##           master    #3953      +/-   ##
==========================================
+ Coverage   86.82%   92.52%   +5.69%     
==========================================
  Files         742       11     -731     
  Lines       38102      615   -37487     
  Branches     4395       80    -4315     
==========================================
- Hits        33081      569   -32512     
+ Misses       3888       34    -3854     
+ Partials     1133       12    -1121

[AlexandreYang]

A suggestion about the parsing logic, mostly to avoid low level split/strip