By enforcing absolute imports, there's no need for module name aliases.
`salt.modules.cmdmod` renamed to `salt.modules.cmd` while enforcing absolute imports.
Since there are some links to `salt.modules.cmdmod` point the user to the correct module.
Since the module/state got renamed, let's leave a link pointing to the new names.
Renamed `debconfmod` module and state to `debconf` while enforcing absolute imports.
Merge pull request #6782 from s0undt3ch/hotfix/absolute-imports

By enforcing absolute imports, there's no need for module name aliases.