Update name of InsecureCipherMode error-prone pattern
Without this, using bazel 0.4.4 to build fails:
ERROR: jgit/org.eclipse.jgit/BUILD:29:1: Java compilation in rule '//org.eclipse.jgit:insecure_cipher_factory' failed: Worker process sent response with exit code: 1.
jgit/src/org/eclipse/jgit/transport/InsecureCipherFactory.java:63: error: [InsecureCryptoUsage] Insecure usage of a crypto API: the transformation is not a compile-time constant expression.
return Cipher.getInstance(algo);
^
(see http://errorprone.info/bugpattern/InsecureCryptoUsage)