ziti-controller-3.0.0-pre3

What's Changed

Controller Changes

• delete vestigial intermediate issuers by @qrkourier in #381
• finalize controller PKI consolidation w/ default Ziti version 1.7 by @qrkourier in #380
• boilerplate for clustered ha mode of operation by @qrkourier in #355

Other Changes

• escape braces for mdx by @qrkourier in #379

Full Changelog: ziti-controller-3.0.0-pre2...ziti-controller-3.0.0-pre3