Fix to uppercase for mk libs

Change-Id: I2bc2d592a41c1c3d7fb5a0a2fb8d489a19daba0b
diff --git a/src/com/mirantis/mk/Ssl.groovy b/src/com/mirantis/mk/Ssl.groovy
index fcdea5a..c9bec04 100644
--- a/src/com/mirantis/mk/Ssl.groovy
+++ b/src/com/mirantis/mk/Ssl.groovy
@@ -46,7 +46,7 @@
  * @param credentialsId Jenkins credentials name to lookup private key
  */
 def prepareSshAgentKey(credentialsId) {
-    def common = new com.mirantis.mk.common()
+    def common = new com.mirantis.mk.Common()
     c = common.getSshCredentials(credentialsId)
     // create ~/.ssh and delete file ssh-agent.sh which can be stale
     sh('mkdir -p -m 700 ~/.ssh && rm -f ~/.ssh/ssh-agent.sh')