Fix config gen logic for fetching services & erroneous app config

[0pcom]

fixes logic for fallback on hardcoded services and setting services PKs via flag for config gen

fixes erroneous app config

[0pcom]

basic

$ sudo go run cmd/*/*cli.go config gen -bpirx
[2023-05-26T11:19:36.713902318-05:00] INFO [skywire-cli]: Fetched service endpoints from 'http://conf.skywire.skycoin.com'
[2023-05-26T11:19:36.889185501-05:00] INFO [skywire-cli]: Updated file '/opt/skywire/skywire.json' to:
{
	"version": "v1.3.7",
...
...
	"dmsg": {
		"discovery": "http://dmsgd.skywire.skycoin.com",
		"sessions_count": 1,
		"servers": []
	},
	"dmsgpty": {
		"dmsg_port": 22,
		"cli_network": "unix",
		"cli_address": "/tmp/dmsgpty.sock",
		"whitelist": []
	},
	"skywire-tcp": {
		"pk_table": null,
		"listening_address": ":7777"
	},
	"transport": {
		"discovery": "http://tpd.skywire.skycoin.com",
		"address_resolver": "http://ar.skywire.skycoin.com",
		"public_autoconnect": true,
		"transport_setup": [
			"03530b786c670fc7f5ab9021478c7ec9cd06a03f3ea1416c50c4a8889ef5bba80e",
			"03271c0de223b80400d9bd4b7722b536a245eb6c9c3176781ee41e7bac8f9bad21",
			"03a792e6d960c88c6fb2184ee4f16714c58b55f0746840617a19f7dd6e021699d9",
			"0313efedc579f57f05d4f5bc3fbf0261f31e51cdcfde7e568169acf92c78868926",
			"025c7bbf23e3441a36d7e8a1e9d717921e2a49a2ce035680fec4808a048d244c8a",
			"030eb6967f6e23e81db0d214f925fc5ce3371e1b059fb8379ae3eb1edfc95e0b46",
			"02e582c0a5e5563aad47f561b272e4c3a9f7ac716258b58e58eb50afd83c286a7f",
			"02ddc6c749d6ed067bb68df19c9bcb1a58b7587464043b1707398ffa26a9746b26",
			"03aa0b1c4e23616872058c11c6efba777c130a85eaf909945d697399a1eb08426d",
			"03adb2c924987d8deef04d02bd95236c5ae172fe5dfe7273e0461d96bf4bc220be"
		],
		"log_store": {
			"type": "file",
			"location": "/opt/skywire/local/transport_logs",
			"rotation_interval": "168h0m0s"
		},
		"stcpr_port": 0,
		"sudph_port": 0
	},
	"routing": {
		"route_setup_nodes": [
			"0324579f003e6b4048bae2def4365e634d8e0e3054a20fc7af49daf2a179658557"
		],
		"route_finder": "http://rf.skywire.skycoin.com",
		"route_finder_timeout": "10s",
		"min_hops": 0
	},
	"uptime_tracker": {
		"addr": "http://ut.skywire.skycoin.com"
	},
	"launcher": {
		"service_discovery": "http://sd.skycoin.com",
		"apps": [
			{
				"name": "vpn-client",
				"binary": "vpn-client",
				"args": [
					"-dns",
					"1.1.1.1"
				],
				"auto_start": false,
				"port": 43
			},
			{
				"name": "skychat",
				"binary": "skychat",
				"args": [
					"-addr",
					":8001"
				],
				"auto_start": true,
				"port": 1
			},
			{
				"name": "skysocks",
				"binary": "skysocks",
				"auto_start": true,
				"port": 3
			},
			{
				"name": "skysocks-client",
				"binary": "skysocks-client",
				"auto_start": false,
				"port": 13
			},
			{
				"name": "vpn-server",
				"binary": "vpn-server",
				"auto_start": false,
				"port": 44
			}
		],
		"server_addr": "localhost:5505",
		"bin_path": "/opt/skywire/apps",
		"display_node_ip": false
	},
	"survey_whitelist": [
		"02b5ee5333aa6b7f5fc623b7d5f35f505cb7f974e98a70751cf41962f84c8c4637",
		"03714c8bdaee0fb48f47babbc47c33e1880752b6620317c9d56b30f3b0ff58a9c3",
		"020d35bbaf0a5abc8ec0ba33cde219fde734c63e7202098e1f9a6cf9daaeee55a9",
		"027f7dec979482f418f01dfabddbd750ad036c579a16422125dd9a313eaa59c8e1",
		"031d4cf1b7ab4c789b56c769f2888e4a61c778dfa5fe7e5cd0217fc41660b2eb65",
		"0327e2cf1d2e516ecbfdbd616a87489cc92a73af97335d5c8c29eafb5d8882264a",
		"03abbb3eff140cf3dce468b3fa5a28c80fa02c6703d7b952be6faaf2050990ebf4"
	],
	"hypervisors": [],
	"cli_addr": "localhost:3435",
	"log_level": "",
	"local_path": "/opt/skywire/local",
	"dmsghttp_server_path": "/opt/skywire/local/custom",
	"stun_servers": [
		"139.162.12.30:3478",
		"170.187.228.181:3478",
		"172.104.161.184:3478",
		"170.187.231.137:3478",
		"143.42.74.91:3478",
		"170.187.225.78:3478",
		"143.42.78.123:3478",
		"139.162.12.244:3478"
	],
	"shutdown_timeout": "10s",
	"restart_check_delay": "1s",
	"is_public": false,
	"persistent_transports": null,
	"hypervisor": {
		"db_path": "/opt/skywire/users.db",
		"enable_auth": true,
		"cookies": {
			"hash_key": "0a1540c2807b7460c921b095175807eed6fa10ca86657917564b5fd109e609a5122ef932422f8c4330e9d0d154ae1273139e69e81a9cf8f95bffbf3e1bab8e91",
			"block_key": "67ba7ef6d57dc8f78de8e2ebcc0520e5fc5cf3fef4793bc8b5c31e93478c9a39",
			"expires_duration": 43200000000000,
			"path": "/",
			"domain": ""
		},
		"dmsg_port": 46,
		"http_addr": ":8000",
		"enable_tls": false,
		"tls_cert_file": "./ssl/cert.pem",
		"tls_key_file": "./ssl/key.pem"
	}
}

these here

"tls_cert_file": "./ssl/cert.pem",
"tls_key_file": "./ssl/key.pem"

are not supposed to be relative paths, but we don't actually use this or support that in the packages. I think it's been like this for a while.

also I thought we were deprecating the TLS stuff