improve io-tests

Tests are now run through unix socket by default allowing
parallel execution. Test setup configuration is done via
environment variables instead of config files.

test/io-tests/configs/app-settings.config

@@ -1,6 +1,4 @@
 db-pool = 1
 db-pool-timeout = 1
-server-host = "127.0.0.1"
-server-port = 49421
 
 app.settings.external_api_secret = "0123456789abcdef"

test/io-tests/configs/base64-secret-from-file.config

@@ -1,6 +1,4 @@
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 
 # Read secret from a file: /dev/stdin (alias for standard input)
 jwt-secret = "@/dev/stdin"

test/io-tests/configs/dburi-from-file.config

@@ -1,5 +1,3 @@
 db-uri = "@/dev/stdin"
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 jwt-secret = "reallyreallyreallyreallyverysafe"

test/io-tests/configs/role-claim-key.config

@@ -1,5 +1,3 @@
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 jwt-role-claim-key = "$(ROLE_CLAIM_KEY)"
 jwt-secret = "reallyreallyreallyreallyverysafe"

test/io-tests/configs/secret-from-file.config

@@ -1,6 +1,4 @@
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 
 # Read secret from a file: /dev/stdin (alias for standard input)
 jwt-secret = "@/dev/stdin"

test/io-tests/configs/sigusr2-settings.config

@@ -1,7 +1,5 @@
 db-schemas = "test"
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 
 app.settings.name_var = "John"
 jwt-secret = "invalidinvalidinvalidinvalidinvalid"

test/io-tests/configs/simple.config

@@ -1,4 +1,2 @@
 db-pool = 1
-server-host = "127.0.0.1"
-server-port = 49421
 jwt-secret = "reallyreallyreallyreallyverysafe"