Add dependency to org.apache.commons.logging used by Apache HttpClient

Without this dependency running JGit CLI in Eclipse will hit
ClassNotFoundExceptions when HttpClient is trying to log something.

Change-Id: I2d50d9a18fac4c302de2c3a16c07f90ce3e5072e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.pgm/META-INF/MANIFEST.MF

@@ -12,6 +12,7 @@ Import-Package: javax.servlet;version="[3.1.0,4.0.0)",
  org.apache.commons.compress.archivers;version="[1.3,2.0)",
  org.apache.commons.compress.archivers.tar;version="[1.3,2.0)",
  org.apache.commons.compress.archivers.zip;version="[1.3,2.0)",
+ org.apache.commons.logging;version="1.1.1",
  org.eclipse.jetty.continuation;version="[9.0.0,10.0.0)",
  org.eclipse.jetty.http;version="[9.0.0,10.0.0)",
  org.eclipse.jetty.io;version="[9.0.0,10.0.0)",