[utilities] Better detect binary files with python3-magic

Adds a new `file_is_binary()` method to `sos.utilities` to serve as a
single point to determine if a file is binary or not, relying on the
python3-magic module.

Closes: #2839

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 8db8641f..5c1fa318 100644
--- a/setup.py
+++ b/setup.py
@@ -107,7 +107,7 @@ setup(
     ],
     cmdclass=cmdclass,
     command_options=command_options,
-    requires=['pexpect']
+    requires=['pexpect', 'python_magic']
     )