fedora: Ability to auto enable openvswitch service.

We currently have rhel/openvswitch.spec.in that automatically
enables openvswitch service when the package is installed using
chkconfig.

But fedora rpm may not enable openvswitch service automatically.
The macro currently being used in fedora rpm (systemd_post) will
look for preset files in /etc/systemd/system-preset/ to figure
out whether openvswitch service needs to be automatically enabled.
But, the fedora package does not provide such a file. The argument
is that people may want to install the package for binaries and
not necessarily to run OVS.

If someone now wants to install the fedora package and automatically
enable openvswitch, he will have to create a new package that OVS
package depends on to install the preset file. This is unwieldy.

This commit, provides a rpm build time option to enable the openvswitch
service automatically. If you now run the below command, openvswitch
service will be automatically enabled during package installation.

make rpm-fedora RPMBUILD_OPT="--with autoenable"

Signed-off-by: Gurucharan Shetty <[email protected]>
Acked-by: Ansis Atteka <[email protected]>

rhel/openvswitch-fedora.spec.in

@@ -32,6 +32,9 @@
 # This is enabled by default for versions of the distribution that
 # have Python 3 by default (Fedora > 22).
 %bcond_with build_python3
+# If there is a need to automatically enable the package after installation,
+# specify the "--with autoenable"
+%bcond_with autoenable
 
 # Enable PIE, bz#955181
 %global _hardened_build 1
@@ -382,6 +385,7 @@ fi
 %endif
 
 %if 0%{?systemd_post:1}
+    # This may not enable openvswitch service or do daemon-reload.
     %systemd_post %{name}.service
 %else
     # Package install, not upgrade
@@ -390,6 +394,11 @@ fi
     fi
 %endif
 
+%if %{with autoenable}
+    systemctl daemon-reload
+    systemctl enable openvswitch
+%endif
+
 %post selinux-policy
 %selinux_modules_install -s targeted %{_datadir}/selinux/packages/%{name}/openvswitch-custom.pp