Intermittent sanity failures - NDFC issue

[mdmohan]

Seeing this NDFC issue intermittently in sanity.

Temporary: Increase the wait timeout

Permanent: File a bug in NDFC to get it addressed

====

PASS internal/provider.TestAccProvider_Configure (0.92s)
=== RUN TestAccProviderIntegrationTest
provider_test.go:46: Starting testAccPreCheck for provider
provider_test.go:117: Step 1/1 error: Error running apply: exit status 1

    Error: config save failed
    
      with ndfc_inventory_devices.test_resource_inventory_devices_1,
      on terraform_plugin_test.tf line 447, in resource "ndfc_inventory_devices" "test_resource_inventory_devices_1":
     447: resource "ndfc_inventory_devices" "test_resource_inventory_devices_1" {
    
    Error: HTTP Request failed: StatusCode 500 response: {"response": "Switch(es)
    are reloading, please ensure switches are reachable and then perform
    Recalculate Config "}

--- FAIL: TestAccProviderIntegrationTest (520.65s)
FAIL internal/provider.TestAccProviderIntegrationTest (520.65s)
FAIL internal/provider

=== Skipped
=== SKIP: internal/provider TestAccLinksIntraFabricNumLink (0.00s)
links_resource_test.go:294: Skipping test as no link configuration is available

=== SKIP: internal/provider TestAccLinksExtFabricSetup (0.00s)
links_resource_test.go:364: Skipping test as no link configuration is available

=== SKIP: internal/provider TestAccLinksInterFabricMultiSiteUnderlay (0.00s)
links_resource_test.go:449: Skipping test as no link configuration is available

=== Failed
=== FAIL: internal/provider TestAccProviderIntegrationTest (520.65s)
provider_test.go:46: Starting testAccPreCheck for provider
provider_test.go:117: Step 1/1 error: Error running apply: exit status 1

    Error: config save failed
    
      with ndfc_inventory_devices.test_resource_inventory_devices_1,
      on terraform_plugin_test.tf line 447, in resource "ndfc_inventory_devices" "test_resource_inventory_devices_1":
     447: resource "ndfc_inventory_devices" "test_resource_inventory_devices_1" {
    
    Error: HTTP Request failed: StatusCode 500 response: {"response": "Switch(es)
    are reloading, please ensure switches are reachable and then perform
    Recalculate Config "}

DONE 42 tests, 3 skipped, 1 failure in 8881.970s