Openstack image manager added

implementation/image/OpenstackImageManager.py

+import openstack
+import Image
+import ImageManager
+
+
+class OpenstackImageManager(ImageManager.ImageManager):
+
+    def __init__(self, cloud) -> None:
+        super().__init__()
+        self.openstack = openstack.connect(cloud=cloud)
+
+    @staticmethod
+    def os_image_to_rc_image(os_image):
+        return Image.Image(
+            os_image.id,
+            os_image.name,
+            os_image.disk_format
+        )
+
+    def upload_file(self, path):
+        os_image = self.openstack.image.create_image(name=path, filename=path, disk_format='iso')
+
+        return self.os_image_to_rc_image(os_image)
+
+    def get(self, id):
+        os_image = self.openstack.image.get_image(id)
+
+        return self.os_image_to_rc_image(os_image)
+
+    def delete(self, id):
+        self.openstack.image.delete_image(id)
+
+    def list(self):
+        images = []
+
+        for os_image in self.openstack.image.images():
+            images.append(self.os_image_to_rc_image(os_image))
+
+        return images