4.18.1.0: add some highlights (apache#346)

updated milestone changes for 4.18.0.0

4.17.2.0 release and upgrade notes (apache#295)

* 4.17.2.0 release and upgrade notes

Signed-off-by: Rohit Yadav <[email protected]>

about: fix spelling typo error

Signed-off-by: Abhishek Kumar <[email protected]>

Fix advisory visibility

Tagging release 4.16.1.0 on branch 4.16.

fix readthedocs build

Signed-off-by: Rohit Yadav <[email protected]>

Quick install guide update (apache#226)

* Cleanup

* Updated networking and added config drive

* Updated install guide

* fixed word order

* Update qig.rst

* Removed incorrect vlan id

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update qig.rst

* Update source/adminguide/api.rst

Co-authored-by: dahn <[email protected]>

* Update qig.rst

* Update qig.rst

* Update source/quickinstallationguide/qig.rst

Co-authored-by: sureshanaparti <[email protected]>

* Update source/quickinstallationguide/qig.rst

Co-authored-by: sureshanaparti <[email protected]>

Co-authored-by: Andrija Panic <[email protected]>
Co-authored-by: dahn <[email protected]>
Co-authored-by: Rohit Yadav <[email protected]>
Co-authored-by: sureshanaparti <[email protected]>

4.15.1.0: retag 4.15.1.0 docs with k8s provider