Move serv hook functionality & drop GitLogger (#6993)

* Move hook functionality internally

* Internalise serv logic

* Remove old internal paths

* finally remove the gitlogger

* Disallow push on archived repositories

* fix lint error

* Update modules/private/key.go

* Update routers/private/hook.go

* Update routers/private/hook.go

* Update routers/private/hook.go

* Updated routers/private/serv.go

* Fix LFS Locks over SSH

* rev-list needs to be run by the hook process

* fixup

* Improve git test

* Ensure that the lfs files are created with a different prefix

* Reduce the replication in git_test.go

* slight refactor

* Remove unnecessary "/"

* Restore ensureAnonymousClone

* Restore ensureAnonymousClone

* Run rev-list on server side

* Try passing in the alternative directories instead

* Mark test as skipped

* Improve git test

* Ensure that the lfs files are created with a different prefix
* Reduce the replication in git_test.go
* Remove unnecessary "/"

docs/content/doc/advanced/logging-documentation.en-us.md

@@ -27,7 +27,6 @@ log groups:
 * The Router logger
 * The Access logger
 * The XORM logger
-* A logger called the `GitLogger` which is used during hooks.
 
 There is also the go log logger.
 
@@ -180,21 +179,6 @@ which will not be inherited from the `[log]` or relevant
 * `EXPRESSION` will default to `""`
 * `PREFIX` will default to `""`
 
-### The Hook and Serv "GitLoggers"
-
-These are less well defined loggers. Essentially these should only be
-used within Gitea's subsystems and cannot be configured at present.
-
-They will write log files in:
-
-* `%(ROOT_PATH)/hooks/pre-receive.log`
-* `%(ROOT_PATH)/hooks/update.log`
-* `%(ROOT_PATH)/hooks/post-receive.log`
-* `%(ROOT_PATH)/serv.log`
-* `%(ROOT_PATH)/http.log`
-
-In the future these logs may be rationalised.
-
 ## Log outputs
 
 Gitea provides 4 possible log outputs: