Juju fails to create ~/.local folder if it doesn't exist

[Leon]

Juju fails to bootstrap etc. if ~/.local doesn't exist:

ERROR cannot load ssh client keys: mkdir /home/ubuntu/.local: permission denied

Currently, in our cloud-inits, we have to do it ourselves before bootstrapping:

sudo -u ubuntu mkdir -p /home/ubuntu/.local/share/juju

When logged in as "ubuntu", I am able to manually create the folder too so not sure why it says "permission denied".

[Leon (sed-i)]

3.2/stable

[Simon Déziel (sdeziel)]

In our scripts, we even found the need to create `~/.ssh` as otherwise, bootstrapping fails:

```
mkdir -pm 0700 ~/.local/share/juju
mkdir -pm 0700 ~/.ssh
```

[Ian Booth (wallyworld)]

This is due to limitations of strictly confined snaps that we need an upstream fix for.