Datasource: Remove support for unencrypted passwords (#49987)

* Datasource: Remove support for unencrypted passwords

* regenerate swagger

* [WIP] Remove references to datasource password and basic auth password fields (#50015)

* try delete moar tings

* delete provisioning stuff

* remove from yaml

* update snapshots

* remove lingering snapshot fields

* fix ds http settings

* Re-generate swagger and fix swagger-api-spec make target

Co-authored-by: Will Browne <will.browne@grafana.com>
Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

docs/sources/administration/provisioning.md

@@ -98,8 +98,6 @@ datasources:
     uid: my_unique_uid
     # <string> url
     url: http://localhost:8080
-    # <string> Deprecated, use secureJsonData.password
-    password:
     # <string> database user, if used
     user:
     # <string> database name, if used
@@ -108,8 +106,6 @@ datasources:
     basicAuth:
     # <string> basic auth username
     basicAuthUser:
-    # <string> Deprecated, use secureJsonData.basicAuthPassword
-    basicAuthPassword:
     # <bool> enable/disable with credentials headers
     withCredentials:
     # <bool> mark as default datasource. Max one per org