Comment 4 for bug 1822117

For 2.6, we will display in 'juju status' that model is suspended due to an invalid credential. Note that this will also mean that we'd need to check and update model status back to whatever it was before it got suspended when a credential validity is flipped back to 'valid'.

In addition, for 2.7, we will expose credential validity in 'show-model' and 'show-credential' outputs.