gnu: ganeti: Use python-bitarray-2.

Tests fail with the newer version of python-bitarray, so continue using 2.8.1.

* gnu/packages/virtualization.scm (ganeti):
[inputs]: Replace python-bitarray with python-bitarray-2.

Change-Id: If2c70ca30770f5e3ecfd0fd8d2e1be918ef9f419

gnu/packages/python-xyz.scm

@@ -3715,7 +3715,7 @@ variable bit length encoding, you may find this module useful.")
               (uri (pypi-uri "bitarray" version))
               (sha256
                (base32
-                "0ib35sxk46kw2adgikmy4vn9climr0dz99pqf2mia2idcyd232cc"))))))
+                "1wy80bmhg33bpzn28g1n7s8r8f4drj7pcl4m2qb5sql8bbryx376"))))))
 
 (define-public python-boolean.py
   (package

gnu/packages/virtualization.scm

@@ -1094,7 +1094,7 @@ firmware blobs.  You can
            python-pyparsing
            python-pyinotify
            python-pycurl
-           python-bitarray
+           python-bitarray-2
            python-paramiko
            python-psutil))
     (home-page "https://www.ganeti.org/")