[bitnami/elasticsearch] Fix get_machine_ip to handle IPv6 addresses (#67083)

* Fix get_machine_ip to handle IPv6 addresses

Signed-off-by: Reddysekhar Gaduputi <gsekhar73@gmail.com>

* Fix get_machine_ip to handle IPv6 addresses

Signed-off-by: Reddysekhar Gaduputi <gsekhar73@gmail.com>

---------

Signed-off-by: Reddysekhar Gaduputi <gsekhar73@gmail.com>

bitnami/elasticsearch/8/debian-12/prebuildfs/opt/bitnami/scripts/libnet.sh

@@ -8,6 +8,7 @@
 
 # Load Generic Libraries
 . /opt/bitnami/scripts/liblog.sh
+. /opt/bitnami/scripts/libvalidations.sh
 
 # Functions
 
@@ -68,7 +69,13 @@ get_machine_ip() {
         error "Could not find any IP address associated to hostname ${hostname}"
         exit 1
     fi
-    echo "${ip_addresses[0]}"
+
+    # Check if the first IP address is IPv6 and add brackets
+    if validate_ipv6 "${ip_addresses[0]}" ; then
+        echo "[${ip_addresses[0]}]"
+    else
+        echo "${ip_addresses[0]}"
+    fi
 }
 
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