Code review: Add internal connectionCreationTimeout

Author: fabianfett

Diff for: Sources/AsyncHTTPClient/ConnectionPool.swift

@@ -454,7 +454,7 @@ class HTTP1ConnectionProvider {
                              logger: Logger) -> EventLoopFuture<Channel> {
         let connectionID = HTTPConnectionPool.Connection.ID.globalGenerator.next()
         let eventLoop = preference.bestEventLoop ?? self.eventLoop
-        let deadline = NIODeadline.now() + (self.configuration.timeout.connect ?? .seconds(10))
+        let deadline = .now() + self.configuration.timeout.connectionCreationTimeout
         return self.factory.makeHTTP1Channel(
             connectionID: connectionID,
             deadline: deadline,

Diff for: Sources/AsyncHTTPClient/HTTPClient.swift

@@ -833,10 +833,16 @@ extension HTTPClient.Configuration {
         /// Specifies read timeout.
         public var read: TimeAmount?
 
+        /// internal connection creation timeout. Defaults the connect timeout to always contain a value.
+        var connectionCreationTimeout: TimeAmount {
+            self.connect ?? .seconds(10)
+        }
+
         /// Create timeout.
         ///
         /// - parameters:
-        ///     - connect: `connect` timeout.
+        ///     - connect: `connect` timeout. Will default to 10 seconds, if no value is
+        ///       provided. See `var connectionCreationTimeout`
         ///     - read: `read` timeout.
         public init(connect: TimeAmount? = nil, read: TimeAmount? = nil) {
             self.connect = connect