Bug#892806: Acknowledgement (AH00169: caught SIGTERM, shutting down)

[Xavier Bestel <xavier.bestel@free.fr>]

The issue was with certbot stopping apache for certs renewal, failing,
and not restarting apache afterwards:

mars 13 12:02:15 kawa systemd[1]: Stopping The Apache HTTP Server... 
mars 13 12:02:15 kawa systemd[1]: Stopped The Apache HTTP Server. 
mars 13 12:02:26 kawa certbot[6014]: Attempting to renew cert from /etc/letsencrypt/renewal/awak.mobi.conf produced an unexpected error: Failed authorization procedure. awak.mobi (tls-sni-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Incorrect validation certificate for tls-sni-01 challenge. Requested 50a921b19347a4333a7d292d565adb89.a85575dc3cec8fca7c1c5f2350711608.acme.invalid from 78.207.29.31:443. Received 2 certificate(s), first certificate had names "awak.mobi". Skipping. 
mars 13 12:02:26 kawa certbot[6014]: All renewal attempts failed. The following certs could not be renewed: 
mars 13 12:02:26 kawa certbot[6014]:   /etc/letsencrypt/live/awak.mobi/fullchain.pem (failure) 
mars 13 12:02:26 kawa certbot[6014]: 1 renew failure(s), 0 parse failure(s) 
mars 13 12:02:26 kawa systemd[1]: certbot.service: Main process exited, code=exited, status=1/FAILURE 
mars 13 12:02:26 kawa systemd[1]: Failed to start Certbot. 
mars 13 12:02:26 kawa systemd[1]: certbot.timer: Adding 15min 58.754102s random time. 
mars 13 12:02:26 kawa systemd[1]: certbot.service: Unit entered failed state. 
mars 13 12:02:26 kawa systemd[1]: certbot.timer: Adding 59min 29.268333s random time. 
mars 13 12:02:26 kawa systemd[1]: certbot.service: Failed with result 'exit-code'. 

Sorry for the noise. Please close bug.

Regards,

	Xav