Now and/or shell expressions depend on shell plugin

This should fix issues with fish shell users as && and || are
not valid syntax, fish uses actual 'and' and 'or' programs.
Also updated to allow for fish backticks pushed quotes to subshell,
fish seems to handle spaces w/o them.
Lastly, removed encompassing subshell () for fish compatibility.
fixes #13199

lib/ansible/plugins/shell/fish.py

@@ -21,5 +21,12 @@ from ansible.plugins.shell.sh import ShellModule as ShModule
 
 class ShellModule(ShModule):
 
+    _SHELL_AND = '; and'
+    _SHELL_OR = '; or'
+    _SHELL_SUB_LEFT = '('
+    _SHELL_SUB_RIGHT = ')'
+    _SHELL_GROUP_LEFT = ''
+    _SHELL_GROUP_RIGHT = ''
+
     def env_prefix(self, **kwargs):
         return 'env %s' % super(ShellModule, self).env_prefix(**kwargs)