Fix resolution of module resources

This commit allows the correct resolution of resource bundles
for module for which the script name is different from 'main.nf'.

For example:

```
.
├── README.md
├── main.nf
├── modules
│   └── bar
│       ├── main.nf
│       ├── resources
│       │   └── usr
│       │       └── bin
│       │           └── increase.py
│       └── utils.nf
└── nextflow.config
```

Having the `bar` module, the resource path `resources/usr/bin` is
correctly resolved both for `bar/main.nf` and `bar/utils.nf`.

Signed-off-by: Paolo Di Tommaso <paolo.ditommaso@gmail.com>

modules/nextflow/src/main/groovy/nextflow/processor/TaskProcessor.groovy

@@ -1695,8 +1695,9 @@ class TaskProcessor {
     protected List<Path> getBinDirs() {
         final result = new ArrayList(10)
         // module bundle bin dir have priority, add before
-        if( moduleBundle!=null && session.enableModuleBinaries() )
-            result.addAll(moduleBundle.getBinDirs())
+        final bundle = session.enableModuleBinaries() ? getModuleBundle() : null
+        if( bundle!=null )
+            result.addAll(bundle.getBinDirs())
         // then add project bin dir
         if( executor.binDir )
             result.add(executor.binDir)

modules/nextflow/src/main/groovy/nextflow/script/ScriptMeta.groovy

@@ -338,8 +338,6 @@ class ScriptMeta {
     ResourcesBundle getModuleBundle() {
         if( !scriptPath )
             throw new IllegalStateException("Module scriptPath has not been defined yet")
-        if( scriptPath.getName()!='main.nf' )
-            return null
         final bundlePath = scriptPath.resolveSibling('resources')
         return ResourcesBundle.scan(bundlePath)
     }