Make docker creds section in network.yaml as optional in Quorum

[TheJagpreet]

Currently, we don't have an option to exclude docker credentials from network.yaml The docker credentials are used to create a kubernetes secret (docker cred template) which is used to pull images with docker credentials. With the inclusion of images over a public dockerhub registry, we dont need the docker username & password section in the network.yaml, the regcred and thus there is no need to pull the image with docker creds.

The changes required are:

• In the file quorum/configuration/roles/setup/vault_kubernetes/tasks/main.yaml, change the last task named "Create the docker pull credentials" to run only if network.docker.username && network.docker.password are defined and are not empty. To check if a variable (network.docker.username) is defined and not empty, you can use the code network.docker.username | default('', true) | trim != ''

• For the charts, you need to a put a condition to use imagePullSecrets only when network.docker.username | default('', true) | trim != '' and network.docker.password | default('', true) | trim != ''

  The following charts are required to be changed for Quorum

  • [ ] node_constellation chart

  • [ ] node_tessera chart

• Test the network for the above changes.