Fix missing provider when passing as an argument

[tinaboyce]

This PR will fix missing providers that exists in the interactive "provider" drop-down but when attempt to pass it in as an argument from the command line, it doesn't matches the hard-coded list which is a sub-set of the providers in the drop-down list.

Current version of saml2aws v2.36.16: (note the enum value, it is missing a few values like PingOne)

➜  saml2aws_darwin_arm64 git:(1294-missing-idp-provider) ✗ saml2aws configure --idp-provider=PingOne
saml2aws: error: enum value must be one of Akamai,AzureAD,ADFS,ADFS2,Browser,GoogleApps,Ping,JumpCloud,Okta,OneLogin,PSU,KeyCloak,F5APM,Shibboleth,ShibbolethECP,NetIQ,Auth0, got 'PingOne', try --help

The binary built to test the current PR: (note the enum value, PingOne is there)

➜  saml2aws_darwin_arm64 git:(1294-missing-idp-provider) ✗ ./saml2aws configure --idp-provider=PingOn
saml2aws: error: enum value must be one of ADFS,ADFS2,Akamai,Auth0,Authentik,AzureAD,Browser,F5APM,GoogleApps,JumpCloud,KeyCloak,NetIQ,Okta,OneLogin,Ping,PingNTLM,PingOne,Shibboleth,ShibbolethECP, got 'PingOn', try --help
➜  saml2aws_darwin_arm64 git:(1294-missing-idp-provider) ✗ ./saml2aws configure --idp-provider=PingOne
? Please choose a provider:  [Use arrows to move, type to filter]
  Okta
  OneLogin
  Ping
  PingNTLM
> PingOne
  Shibboleth
  ShibbolethECP
failed to input configuration: error selecting provider file: bad input
➜  saml2aws_darwin_arm64 git:(1294-missing-idp-provider) ✗

Closes #1294

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.19%. Comparing base (99d6fe4) to head (0543508).
Report is 27 commits behind head on master.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1305   +/-   ##
=======================================
  Coverage   42.19%   42.19%           
=======================================
  Files          54       54           
  Lines        6456     6456           
=======================================
  Hits         2724     2724           
  Misses       3283     3283           
  Partials      449      449           

Flag	Coverage Δ
unittests	42.19% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.