Execute the postres provisioning script during helm upgrades as well

[hoppeeri]

Is there any reason to not run the postgres script during helm updates? This would help out if you run helm upgrade and expect it to e.g. update the blackduck_user password.

[skatzman-synopsys]

From internal discussion, this will not be of use for the suggested purpose since postgres-init is only supposed to run its full behavior once.