use environment PATH to satisfy COOK-3490 instead of hardcoded path to pg_config
add support for ubuntu 14.04

Ubuntu 14.04 includes postgresql 9.3, and no longer symlinks the ssl
certificates into the postgresql data directory, so we need to set the
certificates to the snakeoil certs in /etc
add ubuntu 1404 to kithen.yml
added 1404 to tested on docs
remove redundant certifcate config for Debian.

This was already added in #116.
remove redundant inclusion of client dev package

FIXES #114

To recap
--------

This package was originally added as a mis-fix because someone inadvertently
clobbered their client packages.

https://github.com/hw-cookbooks/postgresql/pull/88

Apart from being "the wrong way" to fix the problem, it also resulted in
breaking centos/redhat. CentOS was fixed by wrapping in an "if debian?" here:

https://github.com/hw-cookbooks/postgresql/pull/96/files

But really it never should have been added, per @jeremyolliver

https://github.com/hw-cookbooks/postgresql/pull/96#issuecomment-40990271

This block was to be removed in https://github.com/hw-cookbooks/postgresql/pull/99

But somehow this code is still [in
develop](https://github.com/hw-cookbooks/postgresql/blob/develop/recipes/ruby.rb#L57).

It looks like #99 targeted a different base branch than #96, so perhaps there was a botched merge.

Phew!
Merge pull request #153 from hw-cookbooks/fix/pg_config-path

[pg gem] modify PATH instead of providing hard-coded path to pg_config executable
Merge pull request #150 from jackpine/feature/ubuntu1404

Support for Ubuntu 14.04 (with test)
add support for releasing cookbooks with emeril
Merge pull request #154 from hw-cookbooks/release

add support for releasing cookbooks with emeril
Merge pull request #151 from jackpine/feature/remove_pg_dev_dependency

Feature/remove pg dev dependency
update changelog for release v3.4.1
Merge pull request #155 from hw-cookbooks/develop

Release v3.4.1
Changed the Gem::Installer::ExtensionBuildError to a Mixlib::ShellOut::ShellCommandFailed to temporarily band-aid the error that causes new Chef versions to miss the chef-solo workaround
Added old exception rescuing style as well 

Added (Gem::Installer::ExtensionBuildError, Mixlib::ShellOut::ShellCommandFailed => e) to rescue block.
Merge pull request #169 from SimonKaluza/develop

Changed the Gem::Installer::ExtensionBuildError to a Mixlib::ShellOut::S...
Bug fix release version 3.4.2