meta: rename pip_install_wheel.bbclass to python_pep517.bbclass

pip_install_wheel shouldn't restricted to just using Pip to install
wheels (the installer module is simplier and likely a better option),
and in the future may be extended to also provide do_compile() using
the build module.

(From OE-Core rev: 3bdf64b97facce9706cc579bdbc9a80e0d48428f)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3-wheel_0.37.1.bb

@@ -13,7 +13,7 @@ SRC_URI += " file://0001-Backport-pyproject.toml-from-flit-backend-branch.patch"
 DEPENDS:remove:class-native = "python3-pip-native"
 
 do_install:class-native () {
-    pip_install_wheel_do_bootstrap_install
+    python_pep517_do_bootstrap_install
 
     # pip install would normally generate [project.scripts] in ${bindir}
     install -d ${D}/${bindir}