feat(security): Remove Vault dependency on Consul by using file backe…

…nd (#2886)

* feat(security): Remove Vault dependency on Consul by using file backend instead of consul

 Change the Vault backend storage configuration from Consul to Filesystem so that we can remove the Vault dependency on Consul.

 The docker-compose file will also need to change to remove the -consul dependency from repo developer-script.

 The current edgex-consul healthy check on Vault also need to be remove as that check becomes superfluous.

 Closes: #2882

cmd/security-secrets-setup/start_vault.sh

@@ -27,13 +27,9 @@ listener "tcp" {
               tls_disable = "1" 
               cluster_address = "edgex-vault:8201" 
           } 
-          backend "consul" { 
-              path = "vault/" 
-              address = "edgex-core-consul:8500" 
-              scheme = "http" 
-              redirect_addr = "http://edgex-vault:8200"
-              cluster_addr = "http://edgex-vault:8201"
-          }
+          backend "file" {
+              path = "/vault/file"
+          } 
           default_lease_ttl = "168h" 
           max_lease_ttl = "720h"
 '