Add blocking feature to reqwest in collector

Before it was unified from the `database` package.

Author: Kobzol

collector/Cargo.toml

@@ -18,7 +18,7 @@ libc = "0.2"
 chrono = { version = "0.4", features = ["serde"] }
 lazy_static = "1"
 semver = "1.0"
-reqwest = { version = "0.11", features = ["json"] }
+reqwest = { version = "0.11", features = ["json", "blocking"] }
 xz2 = "0.1.3"
 tar = "0.4"
 tokio = { version = "1.6", features = ["rt", "process"] }