SM Check: Add HTTP versions to the test (#721)

* SM Check: Add HTTP versions to the test
Closes #512 out of inactivity
The tests show that all of the list https versions work

* Generate docs

Author: julienduchesne

docs/resources/synthetic_monitoring_check.md

@@ -197,6 +197,8 @@ EOS
       ]
 
       valid_http_versions = [
+        "HTTP/1.0",
+        "HTTP/1.1",
         "HTTP/2",
       ]
 

examples/resources/grafana_synthetic_monitoring_check/http_complex.tf

@@ -71,6 +71,8 @@ EOS
       ]
 
       valid_http_versions = [
+        "HTTP/1.0",
+        "HTTP/1.1",
         "HTTP/2",
       ]
 

grafana/resource_synthetic_monitoring_check_test.go

@@ -105,7 +105,9 @@ func TestAccResourceSyntheticMonitoringCheck_http(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.basic_auth.0.password", "sesame"),
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_status_codes.0", "200"),
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_status_codes.1", "201"),
-					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_http_versions.0", "HTTP/2"),
+					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_http_versions.0", "HTTP/1.0"),
+					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_http_versions.1", "HTTP/1.1"),
+					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.valid_http_versions.2", "HTTP/2"),
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.fail_if_body_matches_regexp.0", "*bad stuff*"),
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.fail_if_body_not_matches_regexp.0", "*good stuff*"),
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.fail_if_header_matches_regexp.0.header", "Content-Type"),