Comment 0 for bug 1689646

Steps to reproduce (on Xenial):

1) install libapache2-mod-php7.0 (note the warning/error)
  apt install libapache2-mod-php7.0
Setting up libapache2-mod-php7.0 (7.0.15-0ubuntu0.16.04.4) ...
Warning: Could not load Apache 2.4 maintainer script helper.

2) apache isn't even running
  ps aux| grep apache # returns nothing

3) the apache2 packages was not pulled in, only apache2-bin
  dpkg -l| grep -w apache2

On Trusty, "apt install libapache2-mod-php5" was our way to setup PHP and have the MPM prefork enabled. I'm not sure if that was the wrong way and it worked by accident but this behavior change broke our tooling.

Additional information:

# lsb_release -rd
Description: Ubuntu 16.04.2 LTS
Release: 16.04
# apt-cache policy libapache2-mod-php7.0 apache2-bin
libapache2-mod-php7.0:
  Installed: 7.0.15-0ubuntu0.16.04.4
  Candidate: 7.0.15-0ubuntu0.16.04.4
  Version table:
 *** 7.0.15-0ubuntu0.16.04.4 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     7.0.4-7ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
apache2-bin:
  Installed: 2.4.18-2ubuntu3.1
  Candidate: 2.4.18-2ubuntu3.1
  Version table:
 *** 2.4.18-2ubuntu3.1 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2.4.18-2ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libapache2-mod-php7.0 7.0.15-0ubuntu0.16.04.4
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Tue May 9 19:58:26 2017
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: php7.0
UpgradeStatus: No upgrade log present (probably fresh install)