Fix code coverage for NS1

script/coverage

@@ -26,6 +26,12 @@ export DYN_PASSWORD=
 export DYN_USERNAME=
 export GOOGLE_APPLICATION_CREDENTIALS=
 
+# Don't allow disabling coverage
+grep -r -I --line-number "# pragma: nocover" octodns && {
+  echo "Code coverage should not be disabled"
+  exit 1
+}
+
 coverage run --branch --source=octodns --omit=octodns/cmds/* "$(command -v nosetests)" --with-xunit "$@"
 coverage html
 coverage xml