fix: add session config to test mocks to prevent NPE

- PackageManager.isEnabled() requires session.config to be non-null
- Added config >> [:] to Session mocks in affected tests
- Fixes CondorExecutorTest and CrgExecutorTest failures

Author: edmundmiller

modules/nextflow/src/test/groovy/nextflow/executor/CondorExecutorTest.groovy

@@ -231,6 +231,7 @@ class CondorExecutorTest extends Specification {
         given:
         def session = Mock(Session)
         session.getContainerConfig() >> new DockerConfig(enabled:false)
+        session.config >> [:]
         def folder = Files.createTempDirectory('test')
         def executor = [:] as CondorExecutor
         def task = new TaskRun(name: 'Hello', workDir: folder, script: 'echo Hello world!')

modules/nextflow/src/test/groovy/nextflow/executor/CrgExecutorTest.groovy

@@ -484,6 +484,7 @@ class CrgExecutorTest extends Specification {
         task.processor = Mock(TaskProcessor)
         task.processor.getSession() >> Mock(Session) {
             getContainerConfig() >> new DockerConfig([:])
+            config >> [:]
         }
         task.processor.getProcessEnvironment() >> [:]
         task.processor.getConfig() >> [:]
@@ -511,6 +512,7 @@ class CrgExecutorTest extends Specification {
         given:
         def sess = Mock(Session) {
             getContainerConfig(null) >> new DockerConfig(enabled: true)
+            config >> [:]
         }
         and:
         def executor = Spy(new CrgExecutor(session: sess)) { isContainerNative()>>false }
@@ -550,6 +552,7 @@ class CrgExecutorTest extends Specification {
         given:
         def sess = Mock(Session) {
             getContainerConfig(null) >> new DockerConfig(enabled: true, legacy:true)
+            config >> [:]
         }
         and:
         def executor = Spy(new CrgExecutor(session: sess)) { isContainerNative()>>false }