This includes a substantial bit of unit test improvements. Also, in
order to allow us to tests command line args (which translate to
helm.Option objects), I had to add a new interface to pkg/helm.
Previously, paging used the last release name of the current set to ask
for more results. Now switched to using the first name of the next set.
Not sure I like this method. It makes the user experience more
complicated.
This adds support for filtering list results. Filter strings are
passed from Helm to Tiller, where they are compiled as regular
expressions and executed against the list of releases. Only matching
releases are returned.
Filters are applied before limits and sorts.
This adds support for dry run on install, as well as providing
enough info for an install to display (verbose) manifests. While
doing this, I ended up just storing the rendered manifests for
simplicity.