Add a table to keep product channel versions and APIs to update them

[gabrielBusta]

This is an API that lets us store the current versions of FIREFOX_NIGHTLY, instead of hard-coding it, so we can update this data using an API from a shipitscript task. This is part of the solution to #1462

[gabrielBusta]

To grant shipitscript scopes to call the API to update versions we'd need a patch in ci-configuration:

diff --git a/clients.yml b/clients.yml
--- a/clients.yml
+++ b/clients.yml
@@ -862,6 +862,8 @@ project/releng/scriptworker/v2/shipit/de
     - project:releng:services/shipit_api/add_release/devedition
     - project:releng:services/shipit_api/add_release/fennec
     - project:releng:services/shipit_api/add_release/firefox
+    - project:releng:services/shipit_api/update_product_channel_version/firefox
     - project:releng:services/shipit_api/dev/add_release/devedition
     - project:releng:services/shipit_api/dev/add_release/firefox
     - project:releng:services/shipit_api/dev/schedule_phase/devedition/ship_devedition
@@ -897,6 +899,8 @@ project/releng/scriptworker/v2/shipit/pr
     - project:releng:services/shipit_api/add_release/devedition
     - project:releng:services/shipit_api/add_release/fennec
     - project:releng:services/shipit_api/add_release/firefox
+    - project:releng:services/shipit_api/update_product_channel_version/firefox
     - project:releng:services/shipit_api/dev/add_release/devedition
     - project:releng:services/shipit_api/dev/add_release/firefox
     - project:releng:services/shipit_api/dev/schedule_phase/devedition/ship_devedition
@@ -918,6 +922,8 @@ project/releng/scriptworker/v2/shipit/pr
     - project:releng:services/shipit_api/add_release/devedition
     - project:releng:services/shipit_api/add_release/fennec
     - project:releng:services/shipit_api/add_release/firefox
+    - project:releng:services/shipit_api/update_product_channel_version/firefox
     - project:releng:services/shipit_api/production/add_release/devedition
     - project:releng:services/shipit_api/production/add_release/firefox
     - project:releng:services/shipit_api/production/schedule_phase/devedition/ship_devedition

[gabrielBusta]

This needs to be followed by a commit 7fef0f6 to use the Firefox Nightly version stored in the database when rebuilding product details. The reason this has to land first is that I need to seed the initial Firefox Nightly version in the database. Otherwise product details will fail because the new table is empty.

[gabrielBusta]

Another follow-up: We will need to grant releng scopes to seed the initial Thunderbird version once the Thunderbird bits are implemented.

Suggested change

	AUTH0_AUTH_SCOPES.update({"rebuild_product_details": LDAP_GROUPS["firefox-signoff"], "update_release_status": [], "create_product_channel_version/firefox": []})
	AUTH0_AUTH_SCOPES.update(
	{
	"rebuild_product_details": LDAP_GROUPS["firefox-signoff"],
	"update_release_status": [],
	"create_product_channel_version/firefox": [],
	"create_product_channel_version/thunderbird": [],
	}
	)