Set the default imagePullPolicy for projectClone to ifNotPresent

[dkwon17]

Description

Consider changing the default imagePullPolicy for project clone container to ifNotPresent:

devworkspace-operator/pkg/config/defaults.go

Line 39 in 5413a98

ImagePullPolicy: "Always",

Additional context

When the imageRegistry for the project clone container is unavailable, this causes an error on workspace startup:

Failed to pull image "[registry.redhat.io/devworkspace/devworkspace-project-clone-rhel9@sha256:c3c279ce6e0c85f983ec5ece1b9c9e5a7773dd25611f0c15fe2849ce0666deb6](http://registry.redhat.io/devworkspace/devworkspace-project-clone-rhel9@sha256:c3c279ce6e0c85f983ec5ece1b9c9e5a7773dd25611f0c15fe2849ce0666deb6)": unable to pull image or OCI artifact: pull image err: initializing source docker://registry.redhat.io/devworkspace/devworkspace-project-clone-rhel9@sha256:c3c279ce6e0c85f983ec5ece1b9c9e5a7773dd25611f0c15fe2849ce0666deb6: Requesting bearer token: received unexpected HTTP status: 503 Service Unavailable; artifact err: get manifest: build image source: Requesting bearer token: received unexpected HTTP status: 503 Service Unavailable

[ibuziuk]

@dkwon17 by any chance do we have granularity for defaults? e.g. set IfNotPresent only for init containers.
I think that "Always" for workspace / devfile images makes sense (e.g. user updates the image but still wants to use the same tag in devfile). However, for DWO internals (init containers / traefik) it makes sense to default to "ifNotPresent"