Adding ignore fuchsia tests for execvp

Author: andrewpollack

src/test/ui/command/command-exec.rs

@@ -5,6 +5,7 @@
 // ignore-pretty issue #37199
 // ignore-emscripten no processes
 // ignore-sgx no processes
+// ignore-fuchsia no execvp syscall provided
 
 #![feature(process_exec)]