Revert "Switch /usr/bin/ipa to Python 3"

This reverts commit 1ebd8334bc.

Switch 'ipa' command to py3 has been done prematurely, thus this commit
reverts it from IPA 4.3.2 and temporarily from master because it is
blocker for developing of the new features.

https://fedorahosted.org/freeipa/ticket/5638

Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

freeipa.spec.in

@@ -421,11 +421,7 @@ installed on every client machine.
 Summary: IPA administrative tools
 Group: System Environment/Base
 BuildArch: noarch
-%if 0%{?with_python3}
-Requires: python3-ipaclient = %{version}-%{release}
-%else
 Requires: python2-ipaclient = %{version}-%{release}
-%endif
 Requires: python-ldap
 
 Provides: %{alt_name}-admintools = %{version}
@@ -741,13 +737,6 @@ make client-install DESTDIR=%{buildroot}
 (cd ipapython && make PYTHON=%{__python3} IPA_VERSION_IS_GIT_SNAPSHOT=no %{?_smp_mflags} DESTDIR=%{buildroot} install)
 (cd ipaplatform && %{__python3} setup.py install --root %{buildroot})
 (cd ipaclient && %{__python3} setup.py install --root %{buildroot})
-
-# Switch shebang of /usr/bin/ipa
-# XXX: This script is installed with ipaserver. When all of ipaserver is
-# built with Python 3, this will no longer be necessary (as long as the py3
-# version is installed after the py2 version, so it overwrites /usr/bin/ipa)
-sed -i -e'1s/python\(2\|$\)/python3/' %{buildroot}%{_bindir}/ipa
-
 %endif # with_python3
 
 %find_lang %{gettext_domain}

ipa

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/python2
 
 # Authors:
 #   Jason Gerard DeRose <jderose@redhat.com>