Merge branch '307-alter-way-shell-commands-are-run' into 'develop'

Altering the way bash commands are run

See merge request !275

src/main/java/net/geant/nmaas/utils/bash/DefaultCommandExecutor.java

@@ -25,7 +25,7 @@ public class DefaultCommandExecutor implements CommandExecutor {
     private String executeInternal(Command command) throws CommandExecutionException {
         try {
             log.info("Executing: {}", command.asString());
-            Process process = new ProcessBuilder(command.asString().split(" ")).start();
+            Process process = new ProcessBuilder(new String[]{"bash", "-c", command.asString()}).start();
             final String errorOutput = new String(process.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);
             if (Strings.isNotEmpty(errorOutput)) {
                 throw new CommandExecutionException("Error received during command execution (details: " + errorOutput + ")");