Re-enable [Ignore] attribute for specific tests

Uncommented the [Ignore] attribute for three test methods in
StartJenkinsJobTests.cs: StartJenkinsJobTest,
StartJenkinsJobNoWaitTest, and StartJenkinsJobNoParametersTest.
These tests are now explicitly marked to be ignored during
execution, likely due to the provided _ignoreMessage.

Author: gravity-api

src/G4.UnitTests/Plugins.Common/StartJenkinsJobTests.cs

@@ -33,7 +33,7 @@ public override void NewPluginTest()
             AssertPlugin<StartJenkinsJob>();
         }
 
-        //[Ignore(message: _ignoreMessage)]
+        [Ignore(message: _ignoreMessage)]
         [TestMethod(displayName: "Verify that the StartJenkinsJob plugin starts a Jenkins job with issue and " +
             "project fields, waits for completion, and finishes without any exceptions.")]
         public void StartJenkinsJobTest()
@@ -65,7 +65,7 @@ public void StartJenkinsJobTest()
             Assert.IsFalse(exceptions.Any());
         }
 
-        //[Ignore(message: _ignoreMessage)]
+        [Ignore(message: _ignoreMessage)]
         [TestMethod(displayName: "Verify that the StartJenkinsJob plugin starts a Jenkins job without waiting " +
             "for completion and finishes without any exceptions.")]
         public void StartJenkinsJobNoWaitTest()
@@ -95,7 +95,7 @@ public void StartJenkinsJobNoWaitTest()
             Assert.IsFalse(exceptions.Any());
         }
 
-        //[Ignore(message: _ignoreMessage)]
+        [Ignore(message: _ignoreMessage)]
         [TestMethod(displayName: "Verify that the StartJenkinsJob plugin fails when mandatory job parameters " +
             "are not provided.")]
         public void StartJenkinsJobNoParametersTest()