DRIVERS-1929 Add missing "hello" to load balanacer spec test (#1071)

Author: ShaneHarvey

source/load-balancers/tests/sdam-error-handling.json

@@ -260,7 +260,7 @@
       ]
     },
     {
-      "description": "errors during the initial connection hello are ignore",
+      "description": "errors during the initial connection hello are ignored",
       "runOnRequirements": [
         {
           "minServerVersion": "4.9"
@@ -279,7 +279,8 @@
               },
               "data": {
                 "failCommands": [
-                  "isMaster"
+                  "isMaster",
+                  "hello"
                 ],
                 "closeConnection": true,
                 "appName": "lbSDAMErrorTestClient"

source/load-balancers/tests/sdam-error-handling.yml

@@ -139,7 +139,7 @@ tests:
 
   # This test uses singleClient to ensure that connection attempts are routed
   # to the same mongos on which the failpoint is set.
-  - description: errors during the initial connection hello are ignore 
+  - description: errors during the initial connection hello are ignored
     runOnRequirements:
       # Server version 4.9+ is needed to set a fail point on the initial
       # connection handshake with the appName filter due to SERVER-49336.
@@ -153,7 +153,7 @@ tests:
             configureFailPoint: failCommand
             mode: { times: 1 }
             data:
-              failCommands: [isMaster]
+              failCommands: [isMaster, hello]
               closeConnection: true
               appName: *singleClientAppName
       - name: insertOne