Improve firewall quarantine message displayed to http clients

When a user run command line tools (npm and mvn) to build a project or install a package from a proxy with Nexus Firewall capability enabled, an error message displays if any component is quarantined due to policy violations. However, the message is not obvious. For example:

Acceptance Criteria:

• Make the error message displays in CLI more obvious and easy to follow.
• The enhancement is acceptable for both mvn and npm when run CLI, for example:
  • npm install package-name
  • mvn package