hooks: make sure exist_ok is used for multiprocess errors

vcsserver/hook_utils/__init__.py

@@ -48,7 +48,7 b' def install_git_hooks(repo_path, bare, e'
     hooks_path = get_git_hooks_path(repo_path, bare)
 
     if not os.path.isdir(hooks_path):
-        os.makedirs(hooks_path, mode=0o777)
+        os.makedirs(hooks_path, mode=0o777, exist_ok=True)
 
     tmpl_post = pkg_resources.resource_string(
         'vcsserver', '/'.join(
@@ -100,7 +100,7 b' def install_svn_hooks(repo_path, executa'
     executable = executable or sys.executable
     hooks_path = get_svn_hooks_path(repo_path)
     if not os.path.isdir(hooks_path):
-        os.makedirs(hooks_path, mode=0o777)
+        os.makedirs(hooks_path, mode=0o777, exist_ok=True)
 
     tmpl_post = pkg_resources.resource_string(
         'vcsserver', '/'.join(
@@ -140,7 +140,7 b' def install_svn_hooks(repo_path, executa'
 def get_version_from_hook(hook_path):
     version = b''
     hook_content = read_hook_content(hook_path)
-    matches = re.search(rb'(?:RC_HOOK_VER)\s*=\s*(.*)', hook_content)
+    matches = re.search(rb'RC_HOOK_VER\s*=\s*(.*)', hook_content)
     if matches:
         try:
             version = matches.groups()[0]