init_master.lua: check for find and awk too

start_sockproc requires find:
```
bin/resty-auto-ssl/.start_sockproc-wrapped: line 31: find: command not found
```

… and dehydrated invokes awk.

So check for both.

Author: flokli

lib/resty/auto-ssl/init_master.lua

@@ -5,9 +5,11 @@ local str = require "resty.string"
 
 local function check_dependencies()
   local runtime_dependencies = {
+    "awk",
     "bash",
     "curl",
     "diff",
+    "find",
     "grep",
     "mktemp",
     "openssl",