Adapt tests to credentials plugin 1378.v81ef4269d764

https://github.com/jenkinsci/credentials-plugin/releases/tag/1378.v81ef4269d764
includes the change to throw a FormException from the
UsernamePasswordCredentialsImpl constructor.  Change included in:

* jenkinsci/credentials-plugin#558

src/test/java/org/jenkinsci/plugins/gitclient/CredentialsTest.java

@@ -14,6 +14,7 @@
 import com.cloudbees.plugins.credentials.common.StandardCredentials;
 import com.cloudbees.plugins.credentials.common.StandardUsernamePasswordCredentials;
 import com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl;
+import hudson.model.Descriptor.FormException;
 import hudson.model.Fingerprint;
 import hudson.util.LogTaskListener;
 import java.io.File;
@@ -137,7 +138,7 @@ public CredentialsTest(
     }
 
     @Before
-    public void setUp() throws IOException, InterruptedException {
+    public void setUp() throws FormException, IOException, InterruptedException {
         git = null;
         repo = tempFolder.newFolder();
         /* Use a repo with a special character in name - JENKINS-43931 */
@@ -212,7 +213,8 @@ private BasicSSHUserPrivateKey newPrivateKeyCredential(String username, File pri
         return new BasicSSHUserPrivateKey(scope, id, username, privateKeySource, this.passphrase, description);
     }
 
-    private StandardUsernamePasswordCredentials newUsernamePasswordCredential(String username, String password) {
+    private StandardUsernamePasswordCredentials newUsernamePasswordCredential(String username, String password)
+            throws FormException {
         CredentialsScope scope = CredentialsScope.GLOBAL;
         String id = "username-" + username + "-password-" + password + random.nextInt();
         return new UsernamePasswordCredentialsImpl(scope, id, "desc: " + id, username, password);

src/test/java/org/jenkinsci/plugins/gitclient/RemoteGitImplTest.java

@@ -87,7 +87,7 @@ public void testClearCredentials() {
     }
 
     @Test
-    public void testAddCredentials() {
+    public void testAddCredentials() throws Exception {
         CredentialsScope scope = CredentialsScope.GLOBAL;
         String password = "password";
         String url = "https://github.com/jenkinsci/git-client-plugin";
@@ -99,7 +99,7 @@ public void testAddCredentials() {
     }
 
     @Test
-    public void testSetCredentials() {
+    public void testSetCredentials() throws Exception {
         CredentialsScope scope = CredentialsScope.GLOBAL;
         String password = "password";
         String username = "user";
@@ -110,7 +110,7 @@ public void testSetCredentials() {
     }
 
     @Test
-    public void testAddDefaultCredentials() {
+    public void testAddDefaultCredentials() throws Exception {
         CredentialsScope scope = CredentialsScope.GLOBAL;
         String password = "password";
         String username = "user";