Fix to uppercase for mk libs

Change-Id: I2bc2d592a41c1c3d7fb5a0a2fb8d489a19daba0b
diff --git a/src/com/mirantis/mk/Salt.groovy b/src/com/mirantis/mk/Salt.groovy
index 8422cb3..8ec2979 100644
--- a/src/com/mirantis/mk/Salt.groovy
+++ b/src/com/mirantis/mk/Salt.groovy
@@ -53,7 +53,7 @@
  */
 @NonCPS
 def runSaltCommand(master, client, target, function, batch = null, args = null, kwargs = null) {
-    def http = new com.mirantis.mk.http()
+    def http = new com.mirantis.mk.Http()
 
     data = [
         'tgt': target.expression,