add kubefwd, remove redpanda

Author: justincoh

mac.sh

@@ -203,7 +203,7 @@ brew_install_or_upgrade 'rbenv'
 brew_install_or_upgrade 'ruby-build'
 brew_install_or_upgrade 'openssl'
 brew_install_or_upgrade 'elasticsearch@6'
-brew_install_or_upgrade 'redpanda-data/tap/redpanda'
+brew_install_or_upgrade 'txn2/tap/kubefwd'
 brew services start elasticsearch@6
 
 brew unlink openssl && brew link openssl --force