Configure httpd service from installer instead of directly from RPM

File httpd.service was created by RPM, what causes that httpd service may
fail due IPA specific configuration even if IPA wasn't installed or was
uninstalled (without erasing RPMs).

With this patch httpd service is configured by httpd.d/ipa.conf during
IPA installation and this config is removed by uninstaller, so no
residual http configuration related to IPA should stay there.

https://fedorahosted.org/freeipa/ticket/5681

Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>

init/systemd/httpd.service

@@ -1,7 +0,0 @@
-.include /usr/lib/systemd/system/httpd.service
-
-[Service]
-Environment=KRB5CCNAME=/var/run/httpd/ipa/krbcache/krb5ccache
-Environment=KDCPROXY_CONFIG=/etc/ipa/kdcproxy/kdcproxy.conf
-ExecStartPre=/usr/libexec/ipa/ipa-httpd-kdcproxy
-ExecStopPost=-/usr/bin/kdestroy -A