Demonstrate MP JWT

[Emily-Jiang]

Andy Guibert is working on updating vote service to demonstrate FT on WebSphere Liberty.

[starksm64]

Why don't we agree on some config properties that we need in order to validate the token so that there is an integration between jwt and config as an example. For example, some cdi producer can use injected configuration properties such as the following in order to create the validation context used by the jwt implementation:

    @Inject
    @ConfigProperty(name = "mpjwt.signerPublicKey")
    private String publicKeyPemEnc;
    @Inject
    @ConfigProperty(name = "mpjwt.issuedBy")
    private String issuedBy;
    @Inject
    @ConfigProperty(name = "mpjwt.expGracePeriodSecs")
    private int expGracePeriodSecs = 60;