maas: region: credentials workaround, force sync

maas: region: credentials workaround, force sync

Workaround the issues described in [1], stating that salt-formula-maas
package cannot set an autogenerated PostgreSQL password, respectively
the known error thrown during initial setup.

FIXME: These should be reverted later, after fixing the MaaS password
update and initial artifact sync in the salt formula / scripts.

[1] https://docs.mirantis.com/mcp/1.0/mcp-deployment-guide/\
    install-base-infra/set-up-bare-metal-provisioner/configure-maas-vm.html

Change-Id: I8b37f55d3caa4119c64f9549578850dd4eb9e3ad
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>