Add API call for BEADM to rename a boot environment

REST Request:
-------------------------------
PUT /sysadm/beadm
{
   "source" : "newname",
   "action" : "renamebe",
   "target" : "bootthingy"
}

WebSocket Request:
-------------------------------
{
   "namespace" : "sysadm",
   "name" : "beadm",
   "id" : "fooid",
   "args" : {
      "source" : "newname",
      "target" : "bootthingy",
      "action" : "renamebe"
   }
}

Response:
-------------------------------
{
  "args": {
    "renamebe": {
      "source": "newname",
      "target": "bootthingy"
    }
  },
  "id": "fooid",
  "name": "response",
  "namespace": "sysadm"

src/server/library/.~lock.sysadm-beadm.cpp#

@@ -0,0 +1 @@
+,josh,localhost,08.02.2016 13:33,file:///usr/home/josh/.config/libreoffice/4;

src/server/library/sysadm-beadm.cpp

@@ -47,3 +47,31 @@ QJsonObject BEADM::listBEs() {
 
   return retObject;
 }
+
+QJsonObject BEADM::renameBE(QJsonObject jsin) {
+  QJsonObject retObject;
+  
+  QStringList keys = jsin.keys();
+  if (! keys.contains("source") || ! keys.contains("target") ) {
+    retObject.insert("error", "Missing required key(s) 'source / target'");
+    return retObject;
+  }
+
+  // Get the key values
+  QString source = jsin.value("source").toString();
+  QString target = jsin.value("target").toString();
+
+
+  QStringList output = General::RunCommand("beadm rename " + source + " " + target).split("\n");
+  for ( int i = 0; i < output.size(); i++)
+  {
+    if ( output.at(i).indexOf("ERROR") != -1 ) {
+      retObject.insert("error", output.at(i));
+      return retObject;
+    }
+  }
+  
+  retObject.insert("source", source);
+  retObject.insert("target", target);
+  return retObject;
+}

src/server/library/sysadm-beadm.h

@@ -15,6 +15,7 @@ namespace sysadm{
 class BEADM{
 public:
 	static QJsonObject listBEs();
+	static QJsonObject renameBE(QJsonObject);
 };
 	
 } //end of pcbsd namespace