Enable tcp feature of hyper by default. (#637)

Author: tomusdrw

.editorconfig

@@ -9,7 +9,7 @@ trim_trailing_whitespace=true
 max_line_length=120
 insert_final_newline=true
 
-[{.travis.yml,appveyor.yml}]
+[{.travis.yml,appveyor.yml,.gitlab-ci.yml}]
 indent_style=space
 indent_size=2
 tab_width=8

.gitlab-ci.yml

@@ -10,6 +10,7 @@ variables:                         &default-vars
   script:
     - cargo build --all
     - cargo test --all
+    - cargo build --manifest-path ./core-client/Cargo.toml --no-default-features --features http
 
 .only:                             &only
   only:

core-client/transports/Cargo.toml

@@ -44,7 +44,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 url = "1.7"
 
-hyper = { version = "0.14", features = ["client", "http1"], optional = true }
+hyper = { version = "0.14", features = ["client", "http1", "tcp"], optional = true }
 hyper-tls = { version = "0.5", optional = true }
 jsonrpc-server-utils = { version = "18.0.0", path = "../../server-utils", optional = true }
 parity-tokio-ipc = { version = "0.9", optional = true }