Address cases of previous installs of charts stuck in Helm uninstalling state

[rockholla]

If we have a chart that ends up stuck in an uninstalling state, either by way of Loftsman trying to clean out a failed initial release or otherwise:

$ helm ls -A --uninstalling
NAME     NAMESPACE  REVISION  UPDATED                                  STATUS        CHART           APP VERSION
chart    default    1         2020-11-24 10:14:26.158788578 -0600 CST  uninstalling  chart-1.0.0     1.0.0

We'll get errors back like:

2020-11-24T18:04:41-06:00 ERR Error releasing chart chart v1.0.1: Shell error: Error: UPGRADE FAILED: "chart" has no deployed releases chart=chart command=ship namespace=default version=1.0.1

Which at least doesn't tell us clearly the underlying cause. This all remains workaround for Helm shortcomings in this area, but that's a big part of Loftsman at this point, so we should improve the UX here either by way of better messaging, or even better to be able to clean things up further generically if we can.