release 1.0.0 final changes [geonode 4.1.2]

[mwallschlaeger]

Description

This PR fixes minor issues with the chart and prepares for the new chart release 1.0.0.

• fixes issue related to missing IS_CELERY var in celery deployment (#72)
• increases Celery memory due to experienced OOMKilled (#73)
• update docs (#52)
• pycsw microservice is disabled by default, as its missing some changes to geonode which will be released with version 4.2 (https://github.com/GeoNode/geonode/pull/11319)
• now using 52north/geonode:4.1.2 image, as long as official images are not ready (https://github.com/GeoNode/geonode-project/issues/471), geonode-k8s will get a new minor release as soon as the new images are there (#66)

Type of Change

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• [x] Bug fix
• [ ] New feature
• [x] Documentation update
• [ ] Refactoring
• [ ] Other (please describe)

Related Issue

If there is an existing issue related to this pull request, please reference it here.

closes #72 #73 #66 #52

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• The feature or bug fix has been discussed and documented in an issue beforehand.

Additional Notes

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[mwallschlaeger]

What about the secret separation? Do you plan to include this in another release?

no i want to wait until the secret separation is merged and add it to the release.