[php-maint] Bug#855467: php7.0-snmp generates many warnings without snmp installed.

[Alexis Wilke]

Package: php7.0-snmp
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

Somehow, the php7.0-snmp generates many warnings about missing "things"
until I install `snmp`. Maybe snmp should be a dependency?

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Installing `snmp` fixes the problem.

   * What was the outcome of this action?

The warnings did not happen anymore.

   * What outcome did you expect instead?

I would expect the package to install `snmp` automatically. From 
Christian's comment, the `Recommends` does not work as expected.
See here:

https://bugs.launchpad.net/ubuntu/+source/php7.0/+bug/1663376

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-- System Information:
Debian Release: stretch/sid
  APT prefers xenial-updates
  APT policy: (500, 'xenial-updates'), (500, 'xenial-security'), (500, 'xenial')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-62-generic (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
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