expand valid values for bigquery dataset (#7141) (#13520)

closes #13484

Signed-off-by: Modular Magician <[email protected]>

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/7141.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+bigquery:  fixed bug where valid iam member values for bigquery were prevented from actuation by validation
+```

google/resource_iam_member.go

@@ -32,7 +32,7 @@ func validateIAMMember(i interface{}, k string) ([]string, []error) {
 		return nil, []error{fmt.Errorf("invalid value for %s (Terraform does not support IAM members for deleted principals)", k)}
 	}
 
-	if matched, err := regexp.MatchString("(.+:.+|allUsers|allAuthenticatedUsers)", v); err != nil {
+	if matched, err := regexp.MatchString("(.+:.+|projectOwners|projectReaders|projectWriters|allUsers|allAuthenticatedUsers)", v); err != nil {
 		return nil, []error{fmt.Errorf("error validating %s: %v", k, err)}
 	} else if !matched {
 		return nil, []error{fmt.Errorf("invalid value for %s (IAM members must have one of the values outlined here: https://cloud.google.com/billing/docs/reference/rest/v1/Policy#Binding)", k)}