Problem with provider version of a core and fuesoc cache  #700

We found a problem regarding the field version in the section provider of a core and the fusesoc cache folder.

When the value in the field version is changed from v1.0.4-rc0 to v1.0.4-rc1 for example, fusesoc doesn't notice this and the files are not updated in the cache folder. The only known workaround is to change the version in the core :some:core:1.0.4 => :some:core:1.0.5 which is not possible, because the core is used as a dependency of another core and an update of the version number of the core would cause a domino effect.

We have a single repo for all our cores and the cleanest solution to this problem would be if fusesoc checks also the version in the provider section.

I think this issue should be classified as a bug.

CAPI=2:

name: :some:core:1.0.4
description: Some core

filesets:
    rtl:
        files:
            - src/some_file.sv

targets:
    default: &default
        filesets:
            - rtl

provider:
    name: git
    repo: <some_repo>
    version: v1.0.4-rc0