internal/rosa/git: recursively clone submodules

There is generally no reason to disable this, so it was not made optional.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/git.go

@@ -98,6 +98,7 @@ git \
 	-c advice.detachedHead=false \
 	clone \
 	--revision=`+rev+` \
+	--recurse-submodules \
 	`+url+` \
 	/work
 rm -rf /work/.git