Fix problems with non-ascii values passed as part of the command to connection plugins

@drybjed discovered this with non-ascii environment variables and
command line arguments to script and raw module.

test/integration/unicode-test-script

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+echo "Non-ascii arguments:"
+echo $@
+
+echo "Non-ascii Env var:"
+echo $option

test/integration/unicode.yml

@@ -49,6 +49,51 @@
         that:
           - "'¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö ×' in output.stdout_lines"
 
+    - name: Run raw with non-ascii options
+      raw: "/bin/echo Zażółć gęślą jaźń"
+      register: results
+
+    - name: Check that raw output the right thing
+      assert:
+        that:
+          - "'Zażółć gęślą jaźń' in results.stdout_lines"
+
+    - name: Run a script with non-ascii options and environment
+      script: unicode-test-script --option "Zażółć gęślą jaźń"
+      environment:
+        option: Zażółć
+      register: results
+
+    - name: Check that script output includes the nonascii arguments and environment values
+      assert:
+        that:
+          - "'--option Zażółć gęślą jaźń' in results.stdout_lines"
+          - "'Zażółć' in results.stdout_lines"
+
+    - name: Ping with non-ascii environment variable and option
+      ping:
+        data: "Zażółć gęślą jaźń"
+      environment:
+        option: Zażółć
+      register: results
+
+    - name: Check that ping with non-ascii data was correct
+      assert:
+        that:
+          - "'Zażółć gęślą jaźń' == results.ping"
+
+    - name: Command that echos a non-ascii env var
+      command: "echo $option"
+      environment:
+        option: Zażółć
+      register: results
+
+    - name: Check that a non-ascii env var was passed to the command module
+      assert:
+        that:
+          - "'Zażółć' in results.stdout_lines"
+
+
 - name: 'A play for hosts in group: ĪīĬĭ'
   hosts: 'ĪīĬĭ'
   gather_facts: true