tox.ini: include grpc libs for unit tests

Enable the grpc server tests rather than skipping them in
the automated test suite.

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

tox.ini

@@ -13,7 +13,7 @@ deps =
     pytest
     pytest-cov
     dnspython
-    -e .[validation,yaml,toml]
+    -e .[validation,yaml,toml,grpc]
 commands =
     py.test -v --cov=sambacc --cov-report=html {posargs:tests}