Made script non-UNIX specific by using python-based pathing

vm/tests/gh_workflows/NILayerTests/build_layer.py

@@ -8,9 +8,9 @@ def generate_matrix(path_to_data):
     '''
     Generates a matrix in the format of GAV coordinate pairs for GitHub actions.
     '''
-    with open(f'{path_to_data}/popular-maven-libraries.json', 'r') as f:
+    with open(os.path.join(path_to_data,'popular-maven-libraries.json'), 'r') as f:
         data = json.load(f)
-    with open(f'{path_to_data}/excluded-libraries.json', 'r') as f:
+    with open(os.path.join(path_to_data, 'exclude-file.json'), 'r') as f:
         exclude_data = json.load(f)
     matrix = {'coordinates': []}
     found_first = False
@@ -50,9 +50,9 @@ def build_layer(gav, native_image_path):
     subprocess.call(f'mvn dependency:get -Dartifact={gav} -Dtransitive=true', shell=True)
 
     home_path = str(Path.home())
-    library_path = f'{home_path}/.m2/repository/{group_id.replace('.','/')}/{artifact_id}/{version}'
-    jar_path = f'{library_path}/{artifact_id}-{version}.jar'
-    subprocess.call(f'cp {library_path}/{artifact_id}-{version}.pom {library_path}/pom.xml', shell=True)
+    library_path = os.path.join(home_path, '.m2', 'repository', group_id.replace('.','/'), artifact_id, version)
+    jar_path = os.path.join(library_path, f'{artifact_id}-{version}.jar')
+    subprocess.call(f'cp {os.path.join(library_path, f'{artifact_id}-{version}.pom')} {os.path.join({library_path}, 'pom.xml')}', shell=True)
     if Path(library_path).exists():
         subprocess.call(f'mkdir {gav}', shell=True)
         os.chdir(gav)