Feature Request: opkg: support upgrading all packages

[wberrier]

For example, with the yum module:

yum:                                                                                                                                                                                                                                     
  name: '*'                                                                                                                                                                                                                              
  state: latest                                                                                                                                                                                                                          

It would be nice to be able to do the same with opkg:

opkg:                                                                                                                                                                                                                                     
  name: '*'                                                                                                                                                                                                                              
  state: latest                                                                                                                                                                                                                          

Looking at the code, probably wouldn't be too bad to special case *, do opkg list-upgradable and feed that into install_packages.

[marek22k]

I currently use

- name: Upgrade packages
  shell: "opkg list-upgradable | cut -f 1 -d ' ' | xargs -r opkg upgrade"

for this task.

[spacelama]

Keeping in mind that openwrt themselves recommend you don't upgrade packages outside of the release upgrade cycles: https://openwrt.org/meta/infobox/upgrade_packages_warning