qa/admin/check-vm: misc changes
qa/admin/check-vm: misc changes

- changes with ip(1) when ifconfig(1) is not installed
- move _getnetworkaddr() to the start of the file to allow easier
  diffing with allow-pmlc-access
- add packaging stanzas for the missing commands: ifconfig, netstat,
  kubectl and kubelet
- add n/a list for vm24
- add n/a list for vm29

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp