Fix openvpn failure on initial run

[gateway]openvpn restart before config provisioning step and fails

openvpn-openvpn[12547]: Error: statfs /etc/leap: no such file or directory

On the initial run openvpn fails to restart and fails at this step config/role/openvpn/tasks/main.yml -> credentials.yml ( https://0xacab.org/leap/container-platform/lilypad/-/blob/c6d787af527667d24631d61f7b3050d25cce8139/config/roles/openvpn/tasks/credentials.yml#L5) -> https://0xacab.org/leap/container-platform/lilypad/-/blob/c6d787af527667d24631d61f7b3050d25cce8139/config/roles/openvpn/tasks/credentials.yml#L16