Add illustrations

Signed-off-by: mohin7 <[email protected]>

Author: mohin7

data/services/application-modernization/build_devops_toolchain.json

@@ -5,7 +5,7 @@
     "cta_text": "Talk to a DevOps Toolchain Expert",
     "cta_url": "https://appscode.com/contact/",
     "illustration": {
-      "src": "https://www.infracloud.io/assets/img/devops-consulting-services/devops-toolchain.svg",
+      "src": "/assets/images/services/devops-toolchain-consulting-hero.png",
       "alt": "DevOps Toolchain Consulting"
     }
   },