Fix naming of symbols with multiple initialisms
requested to merge gitlab-community/cluster-integration/gitlab-agent:fix-symbols-with-multiple-initisialisms into master
Symbols with multiple initialisms have been named incorrectly in the previous MRs - see discussion !1250 (comment 1721105588). This MR fixes the following falsely named symbols:
- Rename RPCapiFactory to RPCAPIFactory
- Rename RPCapi to RPCAPI
- Rename dummyKubeAPIurl to dummyKubeAPIURL
- Rename kubeAPIurl to kubeAPIURL
- Rename mockRPCapi to mockRPCAPI
See https://google.github.io/styleguide/go/decisions.html#initialisms