DRIVERS-3355: Fix Backpressure-related racy tests (#1867)

Author: sanych-sun

source/logging/logging.md

@@ -95,7 +95,7 @@ Drivers MUST support configuring where log messages should be output, including
     > - If the value is "stdout" (case-insensitive), log to stdout.
     > - If the value is "stderr" (case-insensitive), log to stderr.
     > - Else, if direct logging to files is supported, log to a file at the specified path. If the file already exists, it
-    >     MUST be appended to.
+    >   MUST be appended to.
     >
     > If the variable is not provided or is set to an invalid value (which could be invalid for any reason, e.g. the path
     > does not exist or is not writeable), the driver MUST log to stderr and the driver MAY attempt to warn the user about

source/server-discovery-and-monitoring/server-discovery-and-monitoring-tests.md

@@ -180,7 +180,9 @@ clear event. We create a setup client to enable the ingress connection establish
 connection storm. After the storm, we verify that some of the connections failed to checkout, but that the pool was not
 cleared.
 
-This test requires MongoDB 7.0+.
+This test requires MongoDB 7.0+. See the
+[MongoDB Server Parameters](https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.ingressConnectionEstablishmentRateLimiterEnabled)
+for more details.
 
 1. Create a test client that listens to CMAP events, with maxConnecting=100. The higher maxConnecting will help ensure
     contention for creating connections.
@@ -205,7 +207,9 @@ This test requires MongoDB 7.0+.
 
 6. Assert that 0 `PoolClearedEvent` occurred.
 
-7. Sleep for 1 second to clear the rate limiter.
+7. Ensure that the following steps run at test teardown even if the test fails:
 
-8. Ensure that the following command runs at test teardown even if the test fails.
+    7.1. Sleep for 1 second to clear the rate limiter.
+
+    7.2. Execute the following command:
     `client.admin("setParameter", 1, ingressConnectionEstablishmentRateLimiterEnabled=False)`.

source/server-discovery-and-monitoring/tests/unified/backpressure-server-description-unchanged-on-min-pool-size-population-error.json

@@ -12,6 +12,20 @@ createEntities:
 tests:
   - description: the server description is not changed on handshake error during minPoolSize population
     operations:
+      - name: failPoint
+        object: testRunner
+        arguments:
+          client: setupClient
+          failPoint:
+            configureFailPoint: failCommand
+            mode:
+              skip: 1
+            data:
+              failCommands:
+                - hello
+                - isMaster
+              appName: authErrorTest
+              closeConnection: true
       - name: createEntities
         object: testRunner
         arguments:
@@ -27,20 +41,6 @@ tests:
                   maxConnecting: 1
                   serverMonitoringMode: poll
                   heartbeatFrequencyMS: 1000000
-      - name: failPoint
-        object: testRunner
-        arguments:
-          client: setupClient
-          failPoint:
-            configureFailPoint: failCommand
-            mode:
-              skip: 1
-            data:
-              failCommands:
-                - hello
-                - isMaster
-              appName: authErrorTest
-              closeConnection: true
       - name: waitForEvent
         object: testRunner
         arguments:

source/server-discovery-and-monitoring/tests/unified/backpressure-server-description-unchanged-on-min-pool-size-population-error.yml

@@ -21,7 +21,7 @@ initialData: &initialData
     documents: []
 
 tests:
-  - description: Network error on minPoolSize background creation
+  - description: Server error on minPoolSize background creation
     operations:
       # Configure the initial monitor handshake to succeed but the
       # first or second background minPoolSize establishments to fail.
@@ -38,7 +38,7 @@ tests:
                 - hello
                 - isMaster
               appName: SDAMminPoolSizeError
-              closeConnection: true
+              errorCode: 91
       - name: createEntities
         object: testRunner
         arguments:
@@ -54,6 +54,7 @@ tests:
                   heartbeatFrequencyMS: 10000
                   appname: SDAMminPoolSizeError
                   minPoolSize: 10
+                  serverMonitoringMode: poll
                   serverSelectionTimeoutMS: 1000
             - database:
                 id: &database database