added albacore version 2.3.1 (#8513)

var/spack/repos/builtin/packages/ont-albacore/package.py

@@ -33,8 +33,9 @@ class OntAlbacore(Package):
     kits and Flow Cells."""
 
     homepage = "https://nanoporetech.com"
-    url = "https://mirror.oxfordnanoportal.com/software/analysis/ont_albacore-1.2.4-cp35-cp35m-manylinux1_x86_64.whl"
+    url = "https://mirror.oxfordnanoportal.com/software/analysis/ont_albacore-2.3.1-cp35-cp35m-manylinux1_x86_64.whl"
 
+    version('2.3.1', '0e85ad176e691252344c4c4b673c4b68', expand=False)
     version('2.1.2', '1e60cfb95628829f2a61a85247f1b6af', expand=False)
     version('1.2.4', '559640bec4693af12e4d923e8d77adf6', expand=False)
     version('1.1.0', 'fab4502ea1bad99d813aa2629e03e83d', expand=False)