Feature/add jaeger base url envs

[ajukes]

Added JAEGER_BASE_URL to jambonz-api-server envs in preparation for Jaeger tracing endpoint PR https://github.com/jambonz/jambonz-api-server/pull/147

[ajukes]

Added more Jeager envs to cloudformation ready for @jambonz/tracing. Please checkout following PRs:

• https://github.com/jambonz/sbc-outbound/pull/79
• https://github.com/jambonz/sbc-inbound/pull/96
• https://github.com/jambonz/jambonz-feature-server/pull/311