chore: Fixing the centos 8

Author: NSSPKrishna

test/definitions/super-agent/rhel/centos8-super-agent.json

@@ -17,6 +17,15 @@
 
     "instrumentations": {
         "resources": [
+            {
+                "id": "nr_infra_setup",
+                "resource_ids": ["host1"],
+                "source_repository": "https://github.com/newrelic/open-install-library.git",
+                "deploy_script_path": "test/deploy/linux/shell/roles",
+                "params": {
+                    "step_prepare": "sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* && sed -i '|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*"
+                }
+            },
           {
               "id": "nr_super_agent",
               "resource_ids": ["host1"],

test/definitions/super-agent/rhel/centos8arm64-super-agent.json

@@ -17,6 +17,15 @@
 
     "instrumentations": {
         "resources": [
+            {
+                "id": "nr_infra_setup",
+                "resource_ids": ["host1"],
+                "source_repository": "https://github.com/newrelic/open-install-library.git",
+                "deploy_script_path": "test/deploy/linux/shell/roles",
+                "params": {
+                    "step_prepare": "sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* && sed -i '|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*"
+                }
+            },
           {
               "id": "nr_super_agent",
               "resource_ids": ["host1"],