HapiJS update to new package paths

[brad-gardner]

Is your feature request related to a problem? Please describe.
HapiJS moved their packages to '@hapi/hapi' instead of just 'hapi' and new versions are published there. The agent needs updated to support newer hapijs installs.

Describe the solution you'd like
Update the agent to support both old and new versions and paths

Describe alternatives you've considered
I'm not sure there are alternatives...

Additional context
Creating the issue so I can get a fix and PR started :)

[watson]

Added in #1246