Updated template and created test.

[nsnelson402]

ISSUE TYPE

• Bugfix Pull Request

COMPONENT

• template: cisco_ios_show_ip_access-lists.textfsm
• os: cisco ios
• command: show ip access-lists

SUMMARY

Fixes #964
Updated cisco_ios_show_ip_access-lists.textfsm to include mask-request in ICMP_TYPE

Before
Error: "Could not parse line:".
After
  - acl_type: "Extended"
    acl_name: "mask-request"
    line_num: "10"
    action: "deny"
    protocol: "icmp"
    src_host: ""
    src_any: "any"
    src_network: ""
    src_wildcard: ""
    src_port_match: ""
    src_port: ""
    src_port_range_start: ""
    src_port_range_end: ""
    dst_host: ""
    dst_any: "any"
    dst_network: ""
    dst_wildcard: ""
    dst_port_match: ""
    dst_port: ""
    dst_port_range_start: ""
    dst_port_range_end: ""
    flags_match: ""
    tcp_flag: ""
    log: ""
    icmp_type: "mask-request"
    time: ""
    state: ""
    matches: ""