[keycloak-user] FileTruststoreProviderFactory to drop disabled config flag

[Sebastian Laskawiec]

Hey,

Just a quick heads up - Currently FileTruststoreProviderFactory checks
"disabled" flag during its init method. This check is redundant as each
provider has an "enabled" flag, which is checked by
DefaultKeycloakSessionFactory.

We'd like to drop the "disabled" configuration parameter (see [1][2][3]).
If you're using it, please let us know.

Thanks,
Sebastian

[1] https://issues.jboss.org/browse/KEYCLOAK-11227
[2] https://github.com/keycloak/keycloak-documentation/pull/730/
[3] https://github.com/keycloak/keycloak/pull/6284