chore(vagrant): mmake vagrant-aws optional

Signed-off-by: Maximilian Huber <[email protected]>

README.md

@@ -26,11 +26,10 @@ Clone from this repository.
 
 if you need to use a proxy server please follow this additional instructions before starting with the next chapter:
 
-* install the AWS plugin for vagrant (also if you do not setup AWS as provider)
+* (optional, for support of aws as provider) install the AWS plugin for vagrant
 ```
 $ vagrant plugin install vagrant-aws
 ```
-(although you will not deploy to AWS, it is required, because vagrant parses the description files and finds some conditional statements which are not ignored)
 
 * install the disk size plugin for vagrant to change the virtual disk size (new!)
 ```

generate-box/Vagrantfile

@@ -11,8 +11,10 @@
 # Require configuration settings
 require_relative '../shared/configuration.rb'
 
-# Require the AWS provider plugin
-require 'vagrant-aws'
+unless ! Vagrant.has_plugin?("vagrant-aws")
+  # Require the AWS provider plugin
+  require 'vagrant-aws'
+end
 
 VAGRANTFILE_API_VERSION = "2"
 
@@ -34,6 +36,10 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   else
 
+    unless Vagrant.has_plugin?("vagrant-aws")
+      raise 'vagrant-aws is not installed!'
+    end
+
     # AWS can use a dummy box because its using a AMI anyway.
     config.vm.box = 'aws-dummy'
 

sw360-single/Vagrantfile

@@ -11,8 +11,10 @@
 # Require configuration settings
 require_relative "../shared/configuration.rb"
 
-# Require the AWS provider plugin
-require 'vagrant-aws'
+unless ! Vagrant.has_plugin?("vagrant-aws")
+  # Require the AWS provider plugin
+  require 'vagrant-aws'
+end
 
 VAGRANTFILE_API_VERSION = "2"
 
@@ -54,6 +56,10 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   else
 
+    unless Vagrant.has_plugin?("vagrant-aws")
+      raise 'vagrant-aws is not installed!'
+    end
+
     # Every Vagrant virtual box environment requires a box to build off of.
     # AWS can use a dummy box because its using a AMI anyway.
     config.vm.box = 'aws-dummy'