detect if go is already installed and skip installation

rmmagent-linux.sh

@@ -124,6 +124,7 @@ go_url_arm64="https://go.dev/dl/go1.18.3.linux-arm64.tar.gz"
 go_url_armv6="https://go.dev/dl/go1.18.3.linux-armv6l.tar.gz"
 
 function go_install() {
+        if ! command -v go &> /dev/null; then
                 ## Installing golang
                 case $system in
                 amd64)
@@ -146,6 +147,9 @@ function go_install() {
                 export GOCACHE=/root/.cache/go-build
 
                 echo "Golang Install Done !"
+        else
+                echo "Go is already installed"
+        fi
 }
 
 function agent_compile() {