Make update will mis-update some vendors

[zanmato1984]

When updating vendors using make update, some vendor that are limited with the specified version in glide.yaml will be mis-updated.

[IANTHEREAL]

@WangXiangUSTC will fix it

[IANTHEREAL]

how about it @WangXiangUSTC

[WangXiangUSTC]

I will fix it this week.

[july2993]

i encountered some similar problem when update the vendor, after delete the cache glide cache-clear or rm -rf ~/.glide/cache/, it solved my issue, maybe we can delete the cache every time before update,
some relate discuss Masterminds/glide#592

[gregwebs]

We should move from glide to dep. This has been fairly straightforward for most projects, although dep init does not work on this repo. Or move to gomodules.

[WangXiangUSTC]

already use Go 1.11 module instead of glide