Add regex support in filters

[moflotas]

There is currently no way of filtering components by name, when deploying. I have 2 cases that this feature would resolve

Deploying multiple instances of same kind

I am working on the database project. I have 2 ConfigMaps in one component, first one is for the app configuration (when updated, the app should be redeployed), the second is storing the index fields for the database (when updated, the app can automatically fetch new updates from the file). So I somehow need to be able to deploy 2nd ConfigMap separately from the first, however I didn't find a way to filter same kind of k8s objects.

Deploying to particular availability zone

Sometimes there is a need to deploy component only in one availability zone for testing purposes and then deploy to all zones. This can be mitigated with the proper configuration in jsonnet, but it would be easier to just filter components by zone name.

Hope this feature would also benefit other users, since filtering by regexp will allow users to more gradually make deployments using qbec.

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[moflotas]

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[moflotas]

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