Provide example secrets in local grid

morph/README.rst

morph/grid/local/.gitignore

morph/grid/local/secrets/monitoringvpn/172.23.23.11.key

morph/grid/local/secrets/monitoringvpn/172.23.23.11.pub

morph/grid/local/secrets/monitoringvpn/172.23.23.12.key

morph/grid/local/secrets/monitoringvpn/172.23.23.12.pub

morph/grid/local/secrets/monitoringvpn/172.23.23.13.key

morph/grid/local/secrets/monitoringvpn/172.23.23.13.pub

morph/grid/local/secrets/monitoringvpn/preshared.key

morph/grid/local/secrets/monitoringvpn/server.key

morph/grid/local/secrets/monitoringvpn/server.pub

morph/grid/local/secrets/ristretto.signing-key

morph/grid/local/secrets/stripe.secret