Fix Nexus egress to port 443 and prometheus monitoring

Package Merge Request

Package Changes

1. fix servicemonitor name for prometheus monitoring
2. add networkpolicy for egress to port 443 for the outreach manager

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/nexus/-/merge_requests/42
https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/nexus/-/merge_requests/43

For Issue

closes https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/nexus/-/issues/28