build: fix NaturalEarth url for cartopy (backport #240) (#250)

This is an automatic backport of pull request #240 done by [Mergify](https://mergify.io).


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Author: mergify[bot]

layers/layer4_python3_scientific/0700_fix_packages/Makefile

@@ -0,0 +1,2 @@
+include ../../../adm/root.mk
+include $(MFEXT_HOME)/share/layer_wrapper.mk

layers/layer4_python3_scientific/0700_fix_packages/Makefile.mk

@@ -0,0 +1,7 @@
+include ../../../adm/root.mk
+include $(MFEXT_HOME)/share//simple_layer.mk
+
+all:: $(PREFIX)/lib/python$(PYTHON3_SHORT_VERSION)/site-packages/cartopy/io/.url_naturalearth_fixed
+
+$(PREFIX)/lib/python$(PYTHON3_SHORT_VERSION)/site-packages/cartopy/io/.url_naturalearth_fixed:
+	cd $(PREFIX)/lib/python$(PYTHON3_SHORT_VERSION)/site-packages/cartopy/io/ && cat shapereader.py | sed -e 's/naciscdn.org\/naturalearth\/{resolution}/naturalearth.s3.amazonaws.com\//' | sed -e 's/\/{category}/{resolution}_{category}/' > shapereader.py.new && mv shapereader.py.new shapereader.py && touch .url_naturalearth_fixed

layers/layer5_python2_scientific/0640_cartopy/patches

@@ -0,0 +1 @@
+url.patch

layers/layer5_python2_scientific/0640_cartopy/url.patch

@@ -0,0 +1,14 @@
+diff -up Cartopy-0.13.1/lib/cartopy/io/shapereader.py.orig Cartopy-0.13.1/lib/cartopy/io/shapereader.py
+--- Cartopy-0.13.1/lib/cartopy/io/shapereader.py.orig	2021-09-02 17:01:12.256120098 +0200
++++ Cartopy-0.13.1/lib/cartopy/io/shapereader.py	2021-09-02 17:05:32.046345376 +0200
+@@ -279,8 +279,8 @@ class NEShpDownloader(Downloader):
+     # Define the NaturalEarth URL template. The natural earth website
+     # returns a 302 status if accessing directly, so we use the naciscdn
+     # URL directly.
+-    _NE_URL_TEMPLATE = ('http://naciscdn.org/naturalearth/{resolution}'
+-                        '/{category}/ne_{resolution}_{name}.zip')
++    _NE_URL_TEMPLATE = ('https://naturalearth.s3.amazonaws.com/'
++                        '{resolution}_{category}/ne_{resolution}_{name}.zip')
+ 
+     def __init__(self,
+                  url_template=_NE_URL_TEMPLATE,