automount: rmtree temp directory
ipa-client-automount uses the host keytab to acquire a TGT. The script
sets up a temporary directory for its ccache. At the end of the script
it removes the ccache and temp directory again.
In case of a failed kinit, the ccache is not created and the removal of
the ccache causes an exception. The automount installer now uses
shutil.rmtree() to remove the temporary directory and all its content.
Fixes: https://pagure.io/freeipa/issue/7862
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: François Cami <fcami@redhat.com>