Update references to 4.2.0
Update references to 4.2.0

Update references to version 4.2.0 to version 4.2.x.
Update references to versioned repository 4.2.0 to 4.2 (as the repository should be specific to the 4.2 release, not the point-release).

Signed-off-by: Sebastien Goasguen <250735a416ca4fba2eb297c8d62b7a634570c133@gmail.com>

apache/cloudstack-docs-rn,remibergsma/cloudstack-docs-rn,apache/cloudstack-docs-rn,apache/cloudstack-docs-rn,remibergsma/cloudstack-docs-rn,remibergsma/cloudstack-docs-rn