Add a way to ignore some slow tests by setting the ignoreSlowUnitTests system property.

This is useful in IDEs that don't let you exclude JUnit categories from test runner configurations.

Author: jyemin

driver-core/src/test/functional/com/mongodb/connection/AsyncStreamTimeoutsSpecification.groovy

@@ -35,6 +35,7 @@ import static com.mongodb.ClusterFixture.getPrimary
 import static com.mongodb.ClusterFixture.getSslSettings
 import static com.mongodb.connection.CommandHelper.executeCommand
 
+@IgnoreIf({ System.getProperty('ignoreSlowUnitTests') == 'true' })
 @Category(SlowUnit)
 class AsyncStreamTimeoutsSpecification extends OperationFunctionalSpecification {
 

driver-core/src/test/unit/com/mongodb/connection/InternalStreamConnectionSpecification.groovy

@@ -577,6 +577,7 @@ class InternalStreamConnectionSpecification extends Specification {
         }
     }
 
+    @IgnoreIf({ System.getProperty('ignoreSlowUnitTests') == 'true' })
     @Category(SlowUnit)
     def 'should have threadsafe connection pipelining'() {
         given:
@@ -613,7 +614,7 @@ class InternalStreamConnectionSpecification extends Specification {
     }
 
     @Category([Async, SlowUnit])
-    @IgnoreIf({ javaVersion < 1.7 })
+    @IgnoreIf({ System.getProperty('ignoreSlowUnitTests') == 'true' || javaVersion < 1.7 })
     def 'should have threadsafe connection pipelining asynchronously'() {
         given:
         int threads = 10