[Website 2.0] Nightly Build for v1.x

[connorgoggins]

Description

To add a nightly build Jenkins pipeline for v1.x, we need to create a new Jenkinsfile capable of building all the components without the "Publish" step.

Checklist

Essentials

• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage:
• To the best of my knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change

Changes

• A ci/jenkins/Jenkinsfile_website_nightly

Comments

Tested successfully on Jenkins dev instance (see build output here).

Pipeline is available here.

[mxnet-bot]

Hey @connorgoggins , 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]

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

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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.

[connorgoggins]

@mxnet-label-bot add [pr-awaiting-review]