ci: fetch full tree for all checkouts
ci: fetch full tree for all checkouts

Otherwise the maven git info plugin doesn't seem to quite work properly.

apiman/apiman,msavy/apiman,msavy/apiman,apiman/apiman,apiman/apiman,apiman/apiman,msavy/apiman,msavy/apiman,apiman/apiman,msavy/apiman