[201911][show] Add bgpraw to show run all (#2602)

What I did
Backport #2537
Add bgpraw output to show runningconfiguration all

How I did it
Generate bgpraw output then append it to show runnningconfiguration all's output

How to verify it
Unittest and manual test on 201911 image.

show/main.py

@@ -214,6 +214,11 @@ def run_command(command, display_cmd=False, return_cmd=False):
         sys.exit(rc)
 
 
+def get_cmd_output(cmd):
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    return proc.communicate()[0], proc.returncode
+
+
 def get_interface_mode():
     mode = os.getenv('SONIC_CLI_IFACE_MODE')
     if mode is None:
@@ -1653,8 +1658,25 @@ def runningconfiguration():
 @click.option('--verbose', is_flag=True, help="Enable verbose output")
 def all(verbose):
     """Show full running configuration"""
-    cmd = "sonic-cfggen -d --print-data"
-    run_command(cmd, display_cmd=verbose)
+    cmd = ['sonic-cfggen', '-d', '--print-data']
+    stdout, rc = get_cmd_output(cmd)
+    if rc:
+        click.echo("Failed to get cmd output '{}':rc {}".format(cmd, rc))
+        raise click.Abort()
+
+    try:
+        output = json.loads(stdout)
+    except ValueError as e:
+        click.echo("Failed to load output '{}':{}".format(cmd, e))
+        raise click.Abort()
+
+    if not multi_asic.is_multi_asic():
+        bgpraw_cmd = [constants.RVTYSH_COMMAND, '-c', 'show running-config']
+        bgpraw, rc = get_cmd_output(bgpraw_cmd)
+        if rc:
+            bgpraw = ""
+        output['bgpraw'] = bgpraw
+    click.echo(json.dumps(output, indent=4))
 
 
 # 'acl' subcommand ("show runningconfiguration acl")

sonic-utilities-tests/show_test.py

@@ -0,0 +1,51 @@
+import os
+import sys
+import show.main as show
+from click.testing import CliRunner
+import mock
+from mock import call, MagicMock
+
+test_path = os.path.dirname(os.path.abspath(__file__))
+modules_path = os.path.dirname(test_path)
+sys.path.insert(0, test_path)
+sys.path.insert(0, modules_path)
+
+
+class TestShowRunAllCommands(object):
+    @classmethod
+    def setup_class(cls):
+        print("SETUP")
+        os.environ["UTILITIES_UNIT_TESTING"] = "1"
+
+    def test_show_runningconfiguration_all_json_loads_failure(self):
+        def get_cmd_output_side_effect(*args, **kwargs):
+            return "", 0
+        with mock.patch('show.main.get_cmd_output',
+                mock.MagicMock(side_effect=get_cmd_output_side_effect)) as mock_get_cmd_output:
+            result = CliRunner().invoke(show.cli.commands['runningconfiguration'].commands['all'], [])
+        assert result.exit_code != 0
+
+    def test_show_runningconfiguration_all_get_cmd_ouput_failure(self):
+        def get_cmd_output_side_effect(*args, **kwargs):
+            return "{}", 2
+        with mock.patch('show.main.get_cmd_output',
+                mock.MagicMock(side_effect=get_cmd_output_side_effect)) as mock_get_cmd_output:
+            result = CliRunner().invoke(show.cli.commands['runningconfiguration'].commands['all'], [])
+        assert result.exit_code != 0
+
+    def test_show_runningconfiguration_all(self):
+        def get_cmd_output_side_effect(*args, **kwargs):
+            return "{}", 0
+        with mock.patch('show.main.get_cmd_output',
+                mock.MagicMock(side_effect=get_cmd_output_side_effect)) as mock_get_cmd_output:
+            result = CliRunner().invoke(show.cli.commands['runningconfiguration'].commands['all'], [])
+        assert mock_get_cmd_output.call_count == 2
+        assert mock_get_cmd_output.call_args_list == [
+            call(['sonic-cfggen', '-d', '--print-data']),
+            call(['rvtysh', '-c', 'show running-config'])]
+
+    @classmethod
+    def teardown_class(cls):
+        print("TEARDOWN")
+        os.environ["PATH"] = os.pathsep.join(os.environ["PATH"].split(os.pathsep)[:-1])
+        os.environ["UTILITIES_UNIT_TESTING"] = "0"