[ubuntu-mono] [Bug 51192] Some scripts produce errors with non-bash shells

[AkoluthOfNandus]

Public bug reported:

The scripts "beagle-extract-content", "beagle-index-url" and "beagle-search" exit with an error when executed with dash instead of bash.
The error is "exec: 24: -a: not found"

This is due to dash's "exec" not supporting bash's "exec -a" for setting
the name of the executed process. Many other shells do not support this
either.


FIX:
As Beagle already depends on bash, let the scripts be executed by /bin/bash instead of /bin/sh. Other scripts in the beagle package like "beagled" do this already.

** Affects: beagle (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

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Some scripts produce errors with non-bash shells
https://launchpad.net/bugs/51192