python3-pip: upgrade 20.0.2 -> 21.1.2

21.1.2 contains a fix for CVE-2021-3572
(https://github.com/pypa/pip/commit/e46bdda9711392fec0c45c1175bae6db847cb30b)

The LICENSE.txt signature changed due to an update to the copyright
dates, but the terms are the same.

Also update 0001-change-shebang-to-python3.patch to cover all files in
pip's src directory, since we need to ensure compatibility.

Finally, fix the ordering of the "inherit" and "SRC_URI" lines so that
devtool will correctly identify that there is a new version upstream.

(From OE-Core rev: 2135167ca86ff9d112ef3e71f5320c775d075b6c)

Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3-pip_21.1.2.bb

@@ -0,0 +1,33 @@
+SUMMARY = "The PyPA recommended tool for installing Python packages"
+HOMEPAGE = "https://pypi.org/project/pip"
+SECTION = "devel/python"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=c4fa2b50f55649f43060fa04b0919b9b"
+
+DEPENDS += "python3 python3-setuptools-native"
+
+inherit pypi distutils3
+
+SRC_URI += "file://0001-change-shebang-to-python3.patch"
+
+SRC_URI[md5sum] = "a867fd51eacfd5293f5b7e0c2e7867a7"
+SRC_URI[sha256sum] = "eb5df6b9ab0af50fe1098a52fd439b04730b6e066887ff7497357b9ebd19f79b"
+
+do_install_append() {
+    # Install as pip3 and leave pip2 as default
+    rm ${D}/${bindir}/pip
+}
+
+RDEPENDS_${PN} = "\
+  python3-compile \
+  python3-io \
+  python3-html \
+  python3-json \
+  python3-netserver \
+  python3-setuptools \
+  python3-unixadmin \
+  python3-xmlrpc \
+  python3-pickle \
+"
+
+BBCLASSEXTEND = "native nativesdk"