fix(cli): Python init template does not work in directory with '-' (a…

…ws#15939)

fixes aws#15938

Pytest error after init sample-app on directory "aws-data-pipeline"

```
E     File "C:\Users\<...>\aws-data-pipeline\tests\unit\test_aws_data_pipe
E       from aws-data-pipeline.aws_data_pipeline_stack import AwsDataPipelineStack
E               ^
E   SyntaxError: invalid syntax
```

See aws#15938 for detials

I was having trouble getting the aws-cdk build and tests running in my dev env.  I think its some issues trying to build the code on windows.  Do you have any recommendations on how to best add a test for this change?

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/aws-cdk/lib/init-templates/v1/sample-app/python/tests/unit/test_%name.PythonModule%_stack.template.py

@@ -2,7 +2,7 @@
 import pytest
 
 from aws_cdk import core
-from %name%.%name.PythonModule%_stack import %name.PascalCased%Stack
+from %name.PythonModule%.%name.PythonModule%_stack import %name.PascalCased%Stack
 
 
 def get_template():

packages/aws-cdk/lib/init-templates/v2/sample-app/python/tests/unit/test_%name.PythonModule%_stack.template.py

@@ -2,7 +2,7 @@
 import pytest
 
 import aws_cdk_lib as core
-from %name%.%name.PythonModule%_stack import %name.PascalCased%Stack
+from %name.PythonModule%.%name.PythonModule%_stack import %name.PascalCased%Stack
 
 
 def get_template():

packages/aws-cdk/test/integ/init/test-python.sh

@@ -28,4 +28,5 @@ for template in $templates; do
     pip install -r requirements.txt
 
     cdk synth
+    pytest
 done