[TACACS+]: Move hostcfgd to sonic-buildimage

* Command list
  config aaa authentication login [{tacacs+, local} | default]
  config aaa authentication failthrough [enable | disable | default]
  config tacacs passkey <TEXT>
  config tacacs authtype [pap | chap | mschap]
  config tacacs timeout <0-60>
  config tacacs add <ip_address> --port <1–65535>
                                 --timeout <1–60>
                                 --key <TEXT>
                                 --type [pap | chap | mschap]
                                 --pri <1-64>
  config tacacs delete <ip_address>
  show aaa
  show tacacs

  Signed-off-by: Chenchen Qi <chenchen.qcc@alibaba-inc.com>

setup.py

@@ -50,8 +50,7 @@ def get_test_suite():
         'scripts/lldpshow',
         'scripts/port2alias',
         'scripts/portstat',
-        'scripts/teamshow', 
-        'scripts/hostcfgd'
+        'scripts/teamshow'
     ],
     data_files=[
         ('/etc/bash_completion.d', glob.glob('data/etc/bash_completion.d/*')),