Refreshing disabled snap "kubectl" not supported

More snaps are now disabled and stuck.

ID   Status  Spawn                 Ready  Summary
481  Doing   2018-02-17T01:48:48Z  -      
482  Doing   2018-02-19T05:32:01Z  -      Refresh snaps "lxd", "go"
Name                 Version                  Rev   Developer     Notes
atom                 1.23.3                   116   snapcrafters  classic
canonical-livepatch  7.24                     26    canonical     -
charm                2.2.3                    114   charms        -
conjure-up           2.5.3-20180208.2102      962   canonical     classic
core                 16-2.30                  3887  canonical     core
datagrip             2017.3.5                 6     jetbrains     classic
go                   1.9.4                    1404  mwhudson      disabled,classic
juju                 2.3.3                    3452  canonical     classic
kubectl              1.9.2                    303   canonical     disabled,classic
kubefed              1.9.2                    297   canonical     disabled,classic
lxd                  2.21                     5785  canonical     disabled
peek                 1.0.1+git                96    phw           devmode
petname              2.8                      13    kirkland      -
skype                8.15.0.4                 13    skype         classic
spotify              1.0.70.399.g5ffabd56-26  5     spotify       -
vectr                0.1.15                   2     vectr         -
wavebox              3.10.0                   76    wavebox       -
yakyak               1.4.3                    1     snapcrafters  -