Support multiple paths in a service

[nonsoike]

It will be nice to support multiple paths rather than just a single path per service.

For example, the following:

- name: myservice_v1
  upstreamTargets:
    - http://myservice:7003
  path: /countries
  stripPath: false

- name: myservice_v2
  upstreamTargets:
    - http://myservice:7003
  path: /v2/countries
  stripPath: false

can be changed to:

- name: myservice
upstreamTargets:
  - http://myservice:7003
paths:
  - /countries
  - /v2/countries
stripPath: false

[Aaron Parfitt]

@Frontman-Labs/core-team @Frontman-Labs/contributor Thoughts ?

[Amit Yahav]

@nonsoike Are you familiar with industry-level use cases of this? if so this could be a good feature