fix: print correct container registry on init (#485)
fix: print correct container registry on init (#485)

The init kpt-functions command was always printing the default,
regardless of whether an input was provided. This fixes the behavior to
print the proper value.
GoogleContainerTools/kpt-functions-sdk,GoogleContainerTools/kpt-functions-sdk,GoogleContainerTools/kpt-functions-sdk,GoogleContainerTools/kpt-functions-sdk