Support listing external CAs

[Syoc]

Hi,

Hoping the sdk can support the recently implemented includeExternal query option to the /v1/ca endpoint.
Looks like the change should be around here?

ejbca-go-client-sdk/api/ejbca/api_v1_ca.go

Line 515 in 303611a

localVarQueryParams := url.Values{}

[m8rmclaren]

Hi @Syoc

I'm working on sourcing the new openAPI spec and will release a new version when I get it.