Merge snap-kube-proxy:gkk/core18-and-gimme-fix into snap-kube-proxy:master

[George Kraft]

Fix gimme errors

Fix gimme errors by forcing builds to use go from the host environment.

[Kevin W Monroe (kwmonroe)]

LGTM

review: Approve

diff --git a/snapcraft.yaml.in b/snapcraft.yaml.in
index d37922c..99b0fd7 100644
--- a/snapcraft.yaml.in
+++ b/snapcraft.yaml.in
@@ -68,6 +68,7 @@ parts:
       git apply --stat $SNAPCRAFT_PART_BUILD/{{patch}}
       {% endfor %}
       {% endif %}
+      export FORCE_HOST_GO=y
       make clean && make WHAT=cmd/kube-proxy
       cd $SNAPCRAFT_PART_INSTALL
       cp $GOPATH/src/$KUBEREPO/_output/bin/kube-proxy .