[v1.x] Backport #21148

[josephevans]

Backport #21148 from v1.9.x branch to v1.x branch.

• Update repo URLs and website to remove Incubating references.

• Update repo to remove references to Apache Incubator, update website, remove DISCLAIMER.

• Update license check configuration.

• Update license check configuration.

• Update license check configuration.

• Update license check configuration.

• Update license check configuration.

• Add Apache 2.0 license to files without it.

• Add Apache 2.0 license to files without it.

• Remove references to DISCLAIMER in build scripts / configs.

• Rearrange dependencies for ubuntu_tutorials to prevent pip hangs.

• Change node type for Cpp: MKLDNN+GPU builds.

• Update node type

• Add missing node assign for G4 node type.

Description

(Brief description on what this PR is about)

Checklist

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [MODEL], [TUTORIAL], [FEATURE], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage
• Code is well-documented

Changes

• Feature1, tests, (and when applicable, API doc)
• Feature2, tests, (and when applicable, API doc)

Comments

• If this change is a backward incompatible change, why must this change be made.
• Interesting edge cases to note here

[mxnet-bot]

Hey @josephevans , Thanks for submitting the PR
All tests are already queued to run once. If tests fail, you can trigger one or more tests again with the following commands:

• To trigger all jobs: @mxnet-bot run ci [all]
• To trigger specific jobs: @mxnet-bot run ci [job1, job2]

---

CI supported jobs: [unix-gpu, edge, windows-gpu, clang, website, miscellaneous, unix-cpu, centos-cpu, windows-cpu, sanity, centos-gpu]

---

Note:
Only following 3 categories can trigger CI :PR Author, MXNet Committer, Jenkins Admin.
All CI tests must pass before the PR can be merged.

[waytrue17]

LGTM, thanks!