Revert add/del vrf message changes

Author: mdanish-kh

config/main.py

@@ -5199,7 +5199,7 @@ def add_vrf(ctx, vrf_name):
     """Add vrf"""
     config_db = ctx.obj['config_db']
     if not vrf_name.startswith("Vrf") and not (vrf_name == 'mgmt') and not (vrf_name == 'management'):
-        ctx.fail("'vrf_name' does not start with Vrf, mgmt or management!")
+        ctx.fail("'vrf_name' is not start with Vrf, mgmt or management!")
     if len(vrf_name) > 15:
         ctx.fail("'vrf_name' is too long!")
     if (vrf_name == 'mgmt' or vrf_name == 'management'):
@@ -5214,7 +5214,7 @@ def del_vrf(ctx, vrf_name):
     """Del vrf"""
     config_db = ctx.obj['config_db']
     if not vrf_name.startswith("Vrf") and not (vrf_name == 'mgmt') and not (vrf_name == 'management'):
-        ctx.fail("'vrf_name' does not start with Vrf, mgmt or management!")
+        ctx.fail("'vrf_name' is not start with Vrf, mgmt or management!")
     if len(vrf_name) > 15:
         ctx.fail("'vrf_name' is too long!")
     syslog_table = config_db.get_table("SYSLOG_SERVER")