sonic-utilities : Added support for L2_TABLE_TYPE in acl-loader

[ArthiGovindaraj]

• For L2 table type, modified the default rule to match any ip type
• Added support for handling src-mac,dst-mac fields

Related pull requests:
sonic-net/sonic-swss#2554
#2516

What I did

Added L2 table type support in acl-loader utility.

How I did it

ACL supports only L3 and L3V6 table type. There is no support for matching L2 table type.
From CLICK for command "config acl update full <file.json>", provided support for L2 table type and L2 fields like src mac & dst mac.

How to verify it

1. Create L2 Table from CLICK
   "config acl add table -s ingress -p <table_name> L2"

2. Add rules using openconfig json format for supported fields "config acl update full/incremental <file.json>"
   "source-mac": "00:00:00:11:11:12",
   "source-mac-mask": "00:00:00:ff:ff:ff",
   "destination-mac": "00:00:00:11:11:13",
   "destination-mac-mask": "00:00:00:ff:ff:ff",
   "ethertype": "ETHERTYPE_ARP"

3. Validate commands "show acl table"

4. Validate commands and fields in "show acl rule"

5. Validate commands "aclshow -a" /* Ensured that the counters are hitting the relevant rule */
   All the rules are added for each field and combinations as well. and each field tested with traffic in Broadcom based platform.

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)

show acl rule
L2_TABLE RULE_1 1 FORWARD DST_MAC: 00:00:00:22:22:22/00:00:00:ff:ff:ff
ETHER_TYPE: 0x0800
SRC_MAC: 00:00:00:11:11:11/00:00:00:ff:ff:ff

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205