Correctly fix aliases quoting logic (#206)

We were previously incorrectly adding double quotes for the alias values.
According to the man page it's not required. However, there is a requirement if
its a command being pipe.

In addition, the man page mentions this for the alias name:

  The  name  is  a  local  address (no domain part).  Use double quotes when the
  name contains any special characters such as whitespace, `#', `:', or `@'. The
  name is folded to lowercase, in order to make database lookups case
  insensitive.

This includes logic to support this automatically.

- Add new tests for aliases testing all types
- Convert all serverspec tests to inspec
- Add Github actions
- Update platforms to test

Signed-off-by: Lance Albertson <lance@osuosl.org>

test/integration/aliases/controls/aliases.rb

@@ -0,0 +1,21 @@
+control 'aliases' do
+  describe file '/etc/aliases' do
+    its('content') do
+      should cmp <<~EOF
+        #
+        # Auto-generated by Chef.
+        # Local modifications will be overwritten.
+        #
+        # See man 5 aliases for format
+        postmaster:    root
+
+        foo1: bar
+        "foo@bar": foo
+        foo2: "|/usr/bin/bar"
+        foo3: foo,bar
+        foo4: foo@example.com
+        foo5: foo,bar
+      EOF
+    end
+  end
+end

test/integration/aliases/inspec.yml

@@ -0,0 +1 @@
+name: aliases

test/integration/aliases/serverspec/aliases_spec.rb

@@ -1,24 +0,0 @@
-# Copyright:: 2012-2019, Chef Software, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-require_relative './spec_helper'
-
-describe 'postfix::aliases' do
-  context 'configures' do
-    describe file('/etc/aliases') do
-      its(:content) { should match(/^# Auto-generated by Chef/) }
-    end
-  end
-end