OperatorHub stable channel must use "all-namespace" install mode

[tolusha]

Is your task related to a problem? Please describe

OperatorHub stable channel must use "all-namespace" install mode.

Describe the solution you'd like

• Set allNamespaces install mode for a stable channel.
• Drop tech-preview channels
• Provide migration guide from single to all namespaces mode
• Adopt chectl
• Adopt CI

Describe alternatives you've considered

No response

Additional context

[1] #20668

[l0rd]

@tolusha I think this morning we discussed that it may not be possible to publish "all-namespace" mode AND avoid automatic updates. If that's confirmed we should just stop publishing new releases on OperatorHub.

[tolusha]

I've just checked. OLM doesn't allow to update from single namespace to all namespace mode

OwnNamespace InstallModeType not supported, cannot configure to watch own namespace

[tolusha]

@l0rd
So, we can publish new releases on OperatorHub for a stable channel with allNamespace install mode.
Should we remove tech-preview channel ?

[l0rd]

@tolusha 👍 to remove tech-preview channel

[l0rd]

@tolusha do you plan to complete that in 7.42 rigth? I am asking to know if we can include that in the 7.42 release notes

[Kasturi1820]

Release Note text
The stable channel of Che operator has the DevWorkspace enabled by default and use the operator "all-namespace" installation mode. The other channels are being deleted.

[tolusha]

For last two items I have corresponding PRs. So, yes I plan it for 7.42

• procedures: Migration to devworkspace engine che-docs#2159
• operators [R] eclipse-che (7.30.0 7.30.1 7.30.2 7.31.0 7.31.1 7.31.2 7.32.0 7.32.1 7.32.2 7.33.2 7.34.0 7.34.1 7.34.2 7.35.0 7.35.1 7.35.2 7.36.0 7.36.1 7.36.2 7.37.0 7.37.1 7.37.2 7.38.0 7.38.1 7.38.2 7.39.0 7.39.1 7.39.2 7.40.1 7.40.2 7.41.0 7.41.1 7.41.2) redhat-openshift-ecosystem/community-operators-prod#601

[tolusha]

There is the only one channel right now:

I mark this issue as resolved. Doc will be tracked separately.

[max-cx]

sync'd with Red Hat JIRA https://issues.redhat.com/browse/CRW-2646