Nexus role mapping

Summary

Nexus-Repository-Manager additional feature: This addition to Big Bang Nexus allows the user to add multiple roles when nexus is enable for the first time as an addon within Big Bang. addons.nexus.sso is required to be enabled An activate nexus license key is required

/cc @mike.knoth @grant.duncklee

README.md

@@ -255,7 +255,7 @@ To start using Big Bang, you will need to create your own Big Bang environment t
 | addons.nexus.sso.idp_data.email | string | `""` | NXRM email attribute (optional) |
 | addons.nexus.sso.idp_data.groups | string | `""` | NXRM groups attribute (optional) |
 | addons.nexus.sso.idp_data.idpMetadata | string | `""` | IDP SAML Metadata XML as a single line string in single quotes -- this information is public and does not require a secret |
-| addons.nexus.role | object | `{"description":"","id":"","name":"","privileges":"","roles":""}` | NXRM Role |
+| addons.nexus.sso.role | object | `{"description":"","id":"","name":""}` | NXRM Role |
 | addons.nexus.flux | object | `{}` | Flux reconciliation overrides specifically for the Nexus Repository Manager Package |
 | addons.nexus.values | object | `{}` | Values to passthrough to the nxrm chart: https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/nexus.git |
 | addons.nexus.postRenderers | list | `[]` | Post Renderers.  See docs/postrenders.md |