travis: add xcode10.1 build

Related to #1623

Signed-off-by: Ruslan Kuprieiev <[email protected]>

scripts/ci/deploy_condition.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+python_ver="$(python -c 'import sys; print(sys.version_info[0])')"
+
+if [[ $python_ver != "2" ]]; then
+    echo false
+    exit 0
+fi
+
+if [[ $TRAVIS_OS_NAME == "osx" && $TRAVIS_OSX_IMAGE != "xcode10.1" ]]; then
+    echo false
+    exit 0
+fi
+
+echo true