feat: set longer polling timeouts for filestore DeleteInstance and De…

…leteSnapshot (googleapis#195)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 456849206

Source-Link: googleapis/googleapis@fc6a76e

Source-Link: https://github.com/googleapis/googleapis-gen/commit/675d5266b9f35cf0e05370a540fd1db2aeceada2
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNjc1ZDUyNjZiOWYzNWNmMGUwNTM3MGE1NDBmZDFkYjJhZWNlYWRhMiJ9

java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java

@@ -824,13 +824,13 @@ private static Builder initDefaults(Builder builder) {
           .setPollingAlgorithm(
               OperationTimedPollAlgorithm.create(
                   RetrySettings.newBuilder()
-                      .setInitialRetryDelay(Duration.ofMillis(5000L))
+                      .setInitialRetryDelay(Duration.ofMillis(60000L))
                       .setRetryDelayMultiplier(1.5)
-                      .setMaxRetryDelay(Duration.ofMillis(45000L))
+                      .setMaxRetryDelay(Duration.ofMillis(360000L))
                       .setInitialRpcTimeout(Duration.ZERO)
                       .setRpcTimeoutMultiplier(1.0)
                       .setMaxRpcTimeout(Duration.ZERO)
-                      .setTotalTimeout(Duration.ofMillis(300000L))
+                      .setTotalTimeout(Duration.ofMillis(900000L))
                       .build()));
 
       builder