Enable a julia test again

tests/julia/julia_version-1.1/verify

@@ -1,17 +1,17 @@
-#!/usr/bin/env julia
+#!/usr/bin/env julia --project=.
 # Verify the version:
 if VERSION < v"1" || VERSION >= v"2"
     exit(1)
 end
 
-# try
-#     # Test that the package was installed.
-#     using IteratorInterfaceExtensions
+try
+    # Test that the package was installed.
+    using IteratorInterfaceExtensions
 
-#     # Verify that the environment variables are set correctly for julia 1.0+
-#     @assert "julia" ∈ readdir(Sys.BINDIR)
-# catch
-#     exit(1)
-# end
+    # Verify that the environment variables are set correctly for julia 1.0+
+    @assert "julia" ∈ readdir(Sys.BINDIR)
+catch
+    exit(1)
+end
 
 exit(0)