Feat/incommon updates

[paulineribeyre]

The first commit copies the changes from release 2.7.2 to master (InCommon updates)
Other commits:

• Shibboleth documentation
• add idp and shib_idp query parameters to /login/fence endpoint. Previously they were only in /authorize endpoint
• Deprecate the ENABLED_IDENTITY_PROVIDERS config and replace by LOGIN_OPTIONS to allow enabling several login options for the same provider

TODO:

• update docs

New Features

• Support InCommon login: add "idp" and "shib_idp" query parameters to "/login/shib", "/login/fence" and "/authorize"

Deployment changes

• Fence config ENABLED_IDENTITY_PROVIDERS section deprecated and replaced by LOGIN_OPTIONS section to allow enabling several login options for the same provider (backwards compatible)

[github-actions]

The style in this PR agrees with black. ✔️

This formatting comment was generated automatically by a script in uc-cdis/wool.

[coveralls]

Pull Request Test Coverage Report for Build 7901

• 63 of 106 (59.43%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.07%) to 69.307%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
fence/init.py	2	3	66.67%
fence/auth.py	2	3	66.67%
fence/blueprints/login/fence_login.py	3	6	50.0%
fence/blueprints/oauth2.py	0	4	0.0%
fence/blueprints/login/shib.py	6	22	27.27%
fence/blueprints/login/init.py	50	68	73.53%

Totals
Change from base Build 7897:	-0.07%
Covered Lines:	5040
Relevant Lines:	7272

---

💛 - Coveralls

[fantix]

Good job!

[fantix]

Nice!

[paulineribeyre]

merging with 1 failed check - we know that the only failed jenkins test, ExportToWorkspaceTest: Export default manifest, mount it and check manifest name, has been flaky recently