Fix URL override not being used for API calls

The openapi generated `ApiClient`/`Configuration` classes have a way to
to pass scheme, host, and base_path but `Configuration#server_settings`
is used unless `Configuration#server_index` is set to `nil`.

app/models/manageiq/providers/cisco_intersight/manager_mixin.rb

@@ -142,17 +142,22 @@ def verify_provider_connection(api_client)
     def raw_connect(url, verify_ssl, key_id, key)
       require "intersight_client"
 
-      uri    = URI.parse(url || "https://intersight.com")
-      scheme = uri.scheme
-      host   = "#{uri.host}:#{uri.port}"
-
       verify_ssl = OpenSSL::SSL::VERIFY_PEER if verify_ssl.nil?
       verify_ssl = verify_ssl == OpenSSL::SSL::VERIFY_PEER
 
       IntersightClient::ApiClient.new(
         IntersightClient::Configuration.new do |config|
-          config.scheme     = scheme
-          config.host       = host
+          if url && url != "https://intersight.com"
+            uri   = URI.parse(url)
+            host  = uri.host
+            host += ":#{uri.port}" if uri.port.present?
+
+            config.scheme       = uri.scheme || "https"
+            config.host         = host
+            config.base_path    = uri.path if uri.path.present?
+            config.server_index = nil
+          end
+
           config.verify_ssl = verify_ssl
           config.api_key    = key
           config.api_key_id = key_id

spec/models/manageiq/providers/cisco_intersight/physical_infra_manager_spec.rb

@@ -15,8 +15,6 @@
   context ".raw_connect" do
     it "connects with key_id and secret key" do
       expect(IntersightClient::Configuration).to receive(:new).and_yield(config_mock)
-      expect(config_mock).to receive(:scheme=).with("https")
-      expect(config_mock).to receive(:host=).with("intersight.com:443")
       expect(config_mock).to receive(:verify_ssl=).with(true)
       expect(config_mock).to receive(:api_key_id=).with("keyid")
       expect(config_mock).to receive(:api_key=).with("secretkey")
@@ -26,8 +24,6 @@
 
     it "defaults to url=https://intersight.com and verify_ssl=true" do
       expect(IntersightClient::Configuration).to receive(:new).and_yield(config_mock)
-      expect(config_mock).to receive(:scheme=).with("https")
-      expect(config_mock).to receive(:host=).with("intersight.com:443")
       expect(config_mock).to receive(:verify_ssl=).with(true)
       expect(config_mock).to receive(:api_key_id=).with("keyid")
       expect(config_mock).to receive(:api_key=).with("secretkey")
@@ -61,8 +57,6 @@
 
     it "connects with key_id and secret key" do
       expect(IntersightClient::Configuration).to receive(:new).and_yield(config_mock)
-      expect(config_mock).to receive(:scheme=).with("https")
-      expect(config_mock).to receive(:host=).with("intersight.com:443")
       expect(config_mock).to receive(:verify_ssl=).with(true)
       expect(config_mock).to receive(:api_key_id=).with("keyid")
       expect(config_mock).to receive(:api_key=).with("secretkey")
@@ -83,6 +77,7 @@
         expect(IntersightClient::Configuration).to receive(:new).and_yield(config_mock)
         expect(config_mock).to receive(:scheme=).with("http")
         expect(config_mock).to receive(:host=).with("intersight.localdomain:8080")
+        expect(config_mock).to receive(:server_index=).with(nil)
         expect(config_mock).to receive(:verify_ssl=).with(false)
         expect(config_mock).to receive(:api_key_id=).with("keyid")
         expect(config_mock).to receive(:api_key=).with("secretkey")