Bump JSch to 1.5.0 to fix Java7 compatibility

JSch has an issue where connections will fail intermittently when
running under Java 7.  This has been fixed in JSch 1.5.0.

Bug: Issue 2232
Change-Id: I62121fb731c24736ed79b836fb0ceb1372130951
diff --git a/pom.xml b/pom.xml
index c4b4b41..9ba3677 100644
--- a/pom.xml
+++ b/pom.xml
@@ -594,7 +594,7 @@
       <dependency>
         <groupId>com.jcraft</groupId>
         <artifactId>jsch</artifactId>
-        <version>0.1.44-1</version>
+        <version>0.1.50</version>
       </dependency>
 
       <dependency>