Fix hack/update-api-reference-docs.sh script

hack/gen-swagger-doc/gen-swagger-docs.sh

@@ -31,7 +31,7 @@ cp /swagger-source/"$1".json input.json
 
 #insert a TOC for top level API objects
 buf="== Top Level API Objects\n\n"
-top_level_models=$(grep IsAnAPIObject ./register.go | sed 's/func (\*\(.*\)) IsAnAPIObject/\1/g' \
+top_level_models=$(grep GetObjectKind ./register.go | sed 's/func (obj \*\(.*\)) GetObjectKind(\(.*\)) .*/\1/g' \
     | tr -d '()' | tr -d '{}' | tr -d ' ')
 for m in $top_level_models
 do

hack/update-api-reference-docs.sh

@@ -56,11 +56,11 @@ if [[ $(uname) == "Darwin" ]]; then
   user_flags=""
 fi 
 
-docker run ${user_flags} --rm -v $V1_TMP_IN_HOST:/output:z -v ${SWAGGER_PATH}:/swagger-source:z gcr.io/google_containers/gen-swagger-docs:v4.1 \
+docker run ${user_flags} --rm -v $V1_TMP_IN_HOST:/output:z -v ${SWAGGER_PATH}:/swagger-source:z gcr.io/google_containers/gen-swagger-docs:v4.2 \
     v1 \
     https://raw.githubusercontent.com/kubernetes/kubernetes/master/pkg/api/v1/register.go
 
-docker run ${user_flags} --rm -v $V1BETA1_TMP_IN_HOST:/output:z -v ${SWAGGER_PATH}:/swagger-source:z gcr.io/google_containers/gen-swagger-docs:v4.1 \
+docker run ${user_flags} --rm -v $V1BETA1_TMP_IN_HOST:/output:z -v ${SWAGGER_PATH}:/swagger-source:z gcr.io/google_containers/gen-swagger-docs:v4.2 \
     v1beta1 \
     https://raw.githubusercontent.com/kubernetes/kubernetes/master/pkg/apis/extensions/v1beta1/register.go