HADOOP-14206. TestSFTPFileSystem#testFileExists failure: Invalid encoding for signature. Contributed by Jim Brennan.

(cherry picked from commit 999096d82e6cc24023a77a69509af6820913f942)

hadoop-project/pom.xml

@@ -1031,7 +1031,7 @@
       <dependency>
         <groupId>com.jcraft</groupId>
         <artifactId>jsch</artifactId>
-        <version>0.1.54</version>
+        <version>0.1.55</version>
       </dependency>
       <dependency>
         <groupId>org.apache.htrace</groupId>