Merge changes from topic "am-e95e7e092a7d468695cf89bca2deb6a6" into udc-dev

* changes:
  [automerger skipped] Merge "[pm] forbid deletion of protected packages" into rvc-qpr-dev am: 61ec81ae -s ours am: 467fe360 -s ours am: 001bfe1c -s ours am: 2a502c15 -s ours am: fa4e6c0b -s ours
  [automerger skipped] [pm] forbid deletion of protected packages am: 53865416 -s ours am: b4f0e169 -s ours am: 8371f697 -s ours am: 18239ed1 -s ours am: 5d92ff8b -s ours