data_apko_tags doesn't respect apk provides

[wlynch]

Currently, data_apko_tags uses a prefix-match to determine matching packages. This works for matching things like foo vs foo-fips.

terraform-provider-apko/internal/provider/tags_data_source.go

Line 123 in 5d34bb6

if strings.HasPrefix(pkg, data.TargetPackage.ValueString()+"-") {

However, this doesn't work if packages are not strict prefixes of each other - e.g. foo-bar vs foo-fips-bar. Normally packages would represent this kind of "foo with bar variant" with a provides section of the apk, but the provider only considers the apko config itself during resolution.

Ideally, the following apk pkginfo should be able to satisfy foo:

name = bar
provides = foo