provisioners/ansible: convert extra vars to strings [GH-2244]

CHANGELOG.md

@@ -15,6 +15,7 @@ BUG FIXES:
   - guests/linux: Don't raise exception right away if mounting fails, allow
     retries. [GH-2234]
   - hosts/arch: Vagrant won't crash on Arch anymore. [GH-2233]
+  - provisioners/ansibe: Extra vars are converted to strings. [GH-2244]
   - provisioners/puppet: Work with restrictive umask. [GH-2241]
 
 ## 1.3.3 (September 18, 2013)

plugins/provisioners/ansible/config.rb

@@ -47,6 +47,12 @@ module VagrantPlugins
         @start_at_task     = nil if @start_at_task == UNSET_VALUE
         @raw_arguments     = nil if @raw_arguments == UNSET_VALUE
         @host_key_checking = nil if @host_key_checking == UNSET_VALUE
+
+        if @extra_vars && @extra_vars.is_a?(Hash)
+          @extra_vars.each do |k, v|
+            @extra_vars[k] = v.to_s
+          end
+        end
       end
 
       def validate(machine)