Cleanup: Remove remaining occurrences of incubator.

[mayankshriv]

Description

Removed occurrences of incubator from the code base.

• Was mostly used in GH links to Pinot landing page, or issues, etc.
• This links were still working today as incubator-pinot gets redirected to pinot.

Upgrade Notes

Does this PR prevent a zero down-time upgrade? (Assume upgrade order: Controller, Broker, Server, Minion)

• Yes (Please label as backward-incompat, and complete the section below on Release Notes)

Does this PR fix a zero-downtime upgrade introduced earlier?

• Yes (Please label this as backward-incompat, and complete the section below on Release Notes)

Does this PR otherwise need attention when creating release notes? Things to consider:

• New configuration options
• Deprecation of configurations
• Signature changes to public methods/interfaces
• New plugins added or old plugins removed

• Yes (Please label this PR as release-notes and complete the section on Release Notes)

Release Notes

Documentation

[codecov-commenter]

Codecov Report

Merging #8023 (6e5bff1) into master (eaa5180) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #8023      +/-   ##
============================================
+ Coverage     71.39%   71.41%   +0.01%     
- Complexity     4222     4225       +3     
============================================
  Files          1597     1597              
  Lines         82903    82903              
  Branches      12369    12369              
============================================
+ Hits          59189    59204      +15     
+ Misses        19707    19696      -11     
+ Partials       4007     4003       -4     

Flag	Coverage Δ
integration1	28.99% <100.00%> (-0.02%)	⬇️
integration2	27.71% <100.00%> (+0.08%)	⬆️
unittests1	68.18% <ø> (+0.04%)	⬆️
unittests2	14.37% <66.66%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ntroller/helix/core/PinotHelixResourceManager.java	65.43% <ø> (ø)
...local/indexsegment/mutable/MutableSegmentImpl.java	59.08% <ø> (ø)
.../java/org/apache/pinot/spi/data/TimeFieldSpec.java	90.90% <ø> (ø)
...pinot/broker/broker/BrokerAdminApiApplication.java	92.68% <100.00%> (ø)
.../controller/api/ControllerAdminApiApplication.java	92.45% <100.00%> (ø)
...apache/pinot/minion/MinionAdminApiApplication.java	91.66% <100.00%> (ø)
...inot/server/starter/helix/AdminApiApplication.java	87.93% <100.00%> (ø)
...pinot/common/utils/fetcher/HttpSegmentFetcher.java	61.53% <0.00%> (-10.26%)	⬇️
...r/helix/SegmentOnlineOfflineStateModelFactory.java	58.49% <0.00%> (-6.61%)	⬇️
.../helix/core/minion/MinionInstancesCleanupTask.java	77.27% <0.00%> (-4.55%)	⬇️
... and 22 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update eaa5180...6e5bff1. Read the comment docs.