Feature/enable sso authentication on connect

[SwissGipfel]

Our own take on sso_auth implementation. Feature PR is duplicate to #45
We just saw, that there's already a PR for this feature.

However, we would already have some tests for the sso_auth option.

[disc]

Hey @SwissGipfel, thank you for the contribution. Can you make sure that tests are okay? the latest pipeline shows that sso_auth-related test is failed;

=== RUN   TestGetServer_basic
    resource_server_test.go:15: Step 3/5 error: Error running apply: exit status 1
        
        Error: Non-200 response on updating the server
        body=500: Internal Server Error
        
          with pritunl_server.test,
          on terraform_plugin_test.tf line 2, in resource "pritunl_server" "test":
           2: resource "pritunl_server" "test" {
        
--- FAIL: TestGetServer_basic (16.71s)
=== RUN   TestGetServer_with_sso_auth
    resource_server_test.go:59: Step 1/7 error: Check failed: Check 2/3 error: pritunl_server.test: Attribute 'sso_auth' expected "true", got "false"

[disc]

Failed tests need to be fixed

[SwissGipfel]

Hey @disc thanks for your review!
My bad, sorry. I only checked the tests against our own test system, not with the Makefile.

With version 1.32.3602.80 of 13be708 all the tests passed (locally)

$ make test
Error response from daemon: No such container: tf_pritunl_acc_test
Unable to find image 'ghcr.io/jippi/docker-pritunl:1.32.3602.80' locally
1.32.3602.80: Pulling from jippi/docker-pritunl
Digest: sha256:5498c843538ac65e586e242b088a9a64cf1ce1249679baa7075d79669703e40c
Status: Downloaded newer image for ghcr.io/jippi/docker-pritunl:1.32.3602.80
3ba27296cdc043c38643f2d8d4a37feb8368e6dfbe348a7340d2b92bdea40886
sleep 20
./tools/wait-for-it.sh localhost:27017 -- echo "mongodb is up"
wait-for-it.sh: waiting 15 seconds for localhost:27017
wait-for-it.sh: localhost:27017 is available after 0 seconds
mongodb is up
# enables an api access for the pritunl user, updates an api token and secret
MongoDB shell version v4.4.23
connecting to: mongodb://127.0.0.1:27017/pritunl?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c603769e-6681-4d01-84dd-6018b2eadb3d") }
MongoDB server version: 4.4.23
{ "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }
bye
TF_ACC=1 \
PRITUNL_URL="https://localhost/" \
PRITUNL_INSECURE="true" \
PRITUNL_TOKEN=tfacctest_token \
PRITUNL_SECRET=tfacctest_secret \
go test -v -cover -count 1 ./internal/provider
=== RUN   TestDataSourceHost
=== PAUSE TestDataSourceHost
=== RUN   TestAccOrganization_basic
=== PAUSE TestAccOrganization_basic
=== RUN   TestGetServer_basic
--- PASS: TestGetServer_basic (2.26s)
=== RUN   TestGetServer_with_sso_auth
--- PASS: TestGetServer_with_sso_auth (2.79s)
=== RUN   TestGetServer_with_attached_organization
--- PASS: TestGetServer_with_attached_organization (4.14s)
=== RUN   TestGetServer_with_a_few_attached_organizations
--- PASS: TestGetServer_with_a_few_attached_organizations (2.67s)
=== RUN   TestGetServer_with_attached_route
--- PASS: TestGetServer_with_attached_route (2.36s)
=== RUN   TestGetServer_with_a_few_attached_routes
--- PASS: TestGetServer_with_a_few_attached_routes (1.62s)
=== RUN   TestGetServer_with_invalid_route
--- PASS: TestGetServer_with_invalid_route (0.12s)
=== RUN   TestCreateServer_with_invalid_network
--- PASS: TestCreateServer_with_invalid_network (0.16s)
=== RUN   TestCreateServer_with_unsupported_network
--- PASS: TestCreateServer_with_unsupported_network (1.38s)
=== RUN   TestCreateServer_with_invalid_bind_address
--- PASS: TestCreateServer_with_invalid_bind_address (1.18s)
=== RUN   TestGetServer_with_default_host
--- PASS: TestGetServer_with_default_host (1.93s)
=== RUN   TestGetServer_without_hosts
--- PASS: TestGetServer_without_hosts (1.83s)
=== RUN   TestAccUser_basic
=== PAUSE TestAccUser_basic
=== CONT  TestDataSourceHost
=== CONT  TestAccUser_basic
=== CONT  TestAccOrganization_basic
--- PASS: TestDataSourceHost (0.58s)
--- PASS: TestAccOrganization_basic (1.94s)
--- PASS: TestAccUser_basic (2.64s)
PASS
coverage: 63.0% of statements
ok  	github.com/disc/terraform-provider-pritunl/internal/provider	25.094s	coverage: 63.0% of statements
tf_pritunl_acc_test

[disc]

@SwissGipfel new option has been already released in the version 0.1.12