Update security.yml template for new properties

[stevehu]

For version 1.5.x framework, there are two properties added to the security.yml

# If OAuth2 provider support http2 protocol. If using light-oauth2, set this to true.
oauthHttp2Support: true

# Enable JWT token cache to speed up verification. This will only verify expired time
# and skip the signature verification as it takes more CPU power and long time.
enableJwtCache: true