* Move tenant.Service unit tests into its package
* Delete the top-level TenantService interface now that it's not used.
* Move helper funcs for setting up test stores into testing pkg
* Delete duplicate implementations scattered through the codebase
* Move error assertions into store-creation helpers
This includes removal of a lot of kv.Service responsibilities. However,
it does not finish the re-wiring. It removes documents, telegrafs,
notification rules + endpoints, checks, orgs, users, buckets, passwords,
urms, labels and authorizations. There are some oustanding pieces that
are needed to get kv service compiling (dashboard service urm
dependency). Then all the call sites for kv service need updating and
the new implementations of telegraf and notification rules + endpoints
needed installing (along with any necessary migrations).
* refactor: migrator and introduce Store.(Create|Delete)Bucket
feat: kvmigration internal utility to create / managing kv store migrations
fix: ensure migrations applied in all test cases
* chore: update kv and migration documentation
this is a step towards providing a shared http client that manages pooling connections,
timeouts, and reducing GC for by not creating/GCing a client each req. Bring on the red!
* chore: Remove several instances of WithLogger
* chore: unexport Logger fields
* chore: unexport some more Logger fields
* chore: go fmt
chore: fix test
chore: s/logger/log
chore: fix test
chore: revert http.Handler.Handler constructor initialization
* refactor: integrate review feedback, fix all test nop loggers
* refactor: capitalize all log messages
* refactor: rename two logger to log
* feat(tracing): dont trace spans with full URL path names in ExtractFromHTTPRequest
* chore(multiple): replace all occurrences of julienschmidt/httprouter with influxdata/httprouter