Remove scope attribute from OAuth2TokenData.

Since the introduction of OAuth2 the scope attribute
of all saved tokens has been "null", as there seemed to
be a bug with ScribeJava. Upgrading from v3.3.6 to v6.8.1
resulted in exceptions due to the scope being saved now,
but violating the 64 char limit.

As the persisted data has not been in use ever since
(the scope is always retrieved from the IdP implementation),
the attribute has been removed to save database space and
avoid the exception.

An appropriate SQL migration script for Flyway has been added.
Relates to IQSS#5991.

src/main/java/edu/harvard/iq/dataverse/authorization/providers/oauth2/OAuth2TokenData.java

@@ -58,9 +58,6 @@ public class OAuth2TokenData implements Serializable {
     @Column(length = 64)
     private String refreshToken;
 
-    @Column(length = 64)
-    private String scope;
-
     @Column(length = 32)
     private String tokenType;
 
@@ -78,7 +75,6 @@ public static OAuth2TokenData from( OAuth2AccessToken accessTokenResponse ) {
         OAuth2TokenData retVal = new OAuth2TokenData();
         retVal.setAccessToken(accessTokenResponse.getAccessToken());
         retVal.setRefreshToken( accessTokenResponse.getRefreshToken() );
-        retVal.setScope( accessTokenResponse.getScope() );
         retVal.setTokenType( accessTokenResponse.getTokenType() );
         if ( accessTokenResponse.getExpiresIn() != null ) {
             retVal.setExpiryDate( new Timestamp( System.currentTimeMillis() + accessTokenResponse.getExpiresIn()));
@@ -136,14 +132,6 @@ public void setRefreshToken(String refreshToken) {
         this.refreshToken = refreshToken;
     }
 
-    public String getScope() {
-        return scope;
-    }
-
-    public void setScope(String scope) {
-        this.scope = scope;
-    }
-
     public String getTokenType() {
         return tokenType;
     }

src/main/resources/db/migration/V4.16.0.3__5991-update-scribejava.sql

@@ -0,0 +1 @@
+ALTER TABLE OAuth2TokenData DROP COLUMN IF EXISTS scope;