Release Summary for 4.3.0
  Difference between master and 4.2
  * [Merge pull request #6 from 2600hz/efine/portability-issues  Fix some portability issues](https://github.com/2600hz/kazoo-configs-haproxy/commit/59fc7c1960e3451fcd9fc967e2e6bd7c7e35720f) by lazedo
  * [Add KillMode=mixed to systemd service for more reliable haproxy shutdown](https://github.com/2600hz/kazoo-configs-haproxy/commit/90cf23da1f4591f52c5a49b90bf7292a09554732) by Edwin Fine
  * [Fix some portability issues  Summary =======  There are three portability issues addressed in this commit:  1. Specifying the shebang as `#!/bin/sh` and then using Bashisms 2. Mixing Bashisms and sh 2. A clash between the meaning of `nc` on Debian and CentOS  Bashisms -------- Running `systemctl start kazoo-haproxy` on Debian 8 resulted in this error:      /usr/sbin/kazoo-haproxy: 51: [: root: unexpected operator  The reason for the error is that the script&#039;s shebang is `#!/bin/sh`, which has different behavior on Debian 8 compared to CentOS 7.  In CentOS 7, `/bin/sh` is symlinked to `/bin/bash`, but on Debian 8, it&#039;s symlinked to `/bin/dash`, which behaves more like the original Bourne shell, `sh`.  See [HTMBSWID][How to make Bash scripts work in dash] for detail.  `sh` (and `dash`) supports `=`, but not `==`, as a string comparison operator, hence one error.  Furthermore, `bash` does not allow `==`  This part of the commit does the following:  1. Change all occurrences of `==` to`=` 2. Change the shebang to `#!/bin/bash`  `nc` vs `ncat` --------------  - On CentOS, `nc` is another way of running `ncat`. - On Debian, `nc` is `netcat`, a totally different utility.  Debian `ncat` seems to hang when used in `kazoo-haproxy`. After some debugging and research, replacing the use of      ncat -U ${SOCKET}  with      socat stdio unix-connect:${SOCKET}  seems to work perfectly in both Debian and CentOS, so this commit adopts the use of `socat`.  [HTMBSWID]: http://mywiki.wooledge.org/Bashism](https://github.com/2600hz/kazoo-configs-haproxy/commit/fa7c500f4f1d440e1ea98d1505122bf17725d967) by Edwin Fine
 -- 2600Hz Official <packages@2600hz.com>  Tue, 11 Sep 2018 20:49:51 +0000
