Upgrade erlexec; fetch it from hex.pm

rebar.config

@@ -8,7 +8,7 @@
 {profiles, [
     {test, [
         {deps, [
-            {erlexec, {git, "https://github.com/saleyn/erlexec.git", {ref, "576fb5d"}}}
+            {erlexec, "1.10.0"}
         ]}
     ]},
     {lint, [