Add --no-index --no-warn-script-location pip options to %pyX_install_wheel

--no-index saves a ~1 minute timeout of pip possibly checking if there is
a newer pip version (in mock with disabled network).

--no-warn-script-location removes a bogus warning that says:

    WARNING: The scripts easy_install and easy_install-3.9 are installed in
    '/builddir/build/BUILDROOT/python-setuptools-49.2.0-1.fc33.x86_64/usr/bin'
    which is not on PATH.
    Consider adding this directory to PATH or, if you prefer to suppress this warning,
    use --no-warn-script-location.

macros.python

@@ -42,7 +42,7 @@
 }
 
 %py_install_wheel() %{expand:\\\
-  %{__python} -m pip install -I dist/%{1} --root %{buildroot} --no-deps
+  %{__python} -m pip install -I dist/%{1} --root %{buildroot} --no-deps --no-index --no-warn-script-location
   rm -rfv %{buildroot}%{_bindir}/__pycache__
   for distinfo in %{buildroot}%{python_sitelib}/*.dist-info %{buildroot}%{python_sitearch}/*.dist-info; do
     if [ -f ${distinfo}/direct_url.json ]; then

macros.python2

@@ -47,7 +47,7 @@
 }
 
 %py2_install_wheel() %{expand:\\\
-  %{__python2} -m pip install -I dist/%{1} --root %{buildroot} --no-deps
+  %{__python2} -m pip install -I dist/%{1} --root %{buildroot} --no-deps --no-index --no-warn-script-location
   rm -rfv %{buildroot}%{_bindir}/__pycache__
   for distinfo in %{buildroot}%{python2_sitelib}/*.dist-info %{buildroot}%{python2_sitearch}/*.dist-info; do
     if [ -f ${distinfo}/direct_url.json ]; then

macros.python3

@@ -40,7 +40,7 @@
 }
 
 %py3_install_wheel() %{expand:\\\
-  %{__python3} -m pip install -I dist/%{1} --root %{buildroot} --no-deps
+  %{__python3} -m pip install -I dist/%{1} --root %{buildroot} --no-deps --no-index --no-warn-script-location
   rm -rfv %{buildroot}%{_bindir}/__pycache__
   for distinfo in %{buildroot}%{python3_sitelib}/*.dist-info %{buildroot}%{python3_sitearch}/*.dist-info; do
     if [ -f ${distinfo}/direct_url.json ]; then

python-rpm-macros.spec

@@ -112,6 +112,7 @@ install -m 644 compileall2.py %{buildroot}%{_rpmconfigdir}/redhat/
 - https://fedoraproject.org/wiki/Changes/PythonMacroError
 - Make %%python macros more consistent with %%python3 macros
 - Define %%python_platform (as a Python version agnostic option to %%python3_platform)
+- Add --no-index --no-warn-script-location pip options to %%pyX_install_wheel
 
 * Wed Jul 08 2020 Miro Hrončok <mhroncok@redhat.com> - 3.9-5
 - Introduce %%python_extras_subpkg