[fwutil]: Update fwutil to v2.0.0.0

[nazariig]

Signed-off-by: Nazarii Hnydyn nazariig@mellanox.com

This PR introduces fwutil v2.0.0.0 according to the design requirements:
sonic-net/SONiC#612

Key features:

1. New CLI command to show available firmware updates
2. New CLI commands to do per component firmware update
3. Advanced user notifications in case system state change

- What I did

• Updated fwutil to v.2.0.0.0 according to the design requirements

- How I did it

• N/A

- How to verify it

1. fwutil show updates
2. fwutil update chassis component <component_name> fw
3. fwutil update module <module_name> component <component_name> fw

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

root@sonic:/home/admin# fwutil update --image=next
Chassis                  Module    Component    Firmware    Version                  Status      Info
-----------------------  --------  -----------  ----------  -----------------------  ----------  ------
x86_64-mlnx_msn3700c-r0  N/A       BIOS         N/A         0ACLH004_02.02.007_9600  up-to-date  N/A
                                   CPLD1        N/A         CPLD000120_REV0223       up-to-date  N/A
                                   CPLD2        N/A         CPLD000162_REV0800       up-to-date  N/A
                                   CPLD3        N/A         CPLD000106_REV0100       up-to-date  N/A
New firmware will be installed, continue? [y/N]: y

Summary:

Chassis                  Module    Component    Status
-----------------------  --------  -----------  ----------
x86_64-mlnx_msn3700c-r0  N/A       BIOS         up-to-date
                                   CPLD1        up-to-date
                                   CPLD2        up-to-date
                                   CPLD3        up-to-date

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

root@sonic:/home/admin# fwutil show updates
Chassis                 Module    Component    Firmware                                   Version (Current/Available)                        Status
----------------------  --------  -----------  -----------------------------------------  -------------------------------------------------  ----------
x86_64-mlnx_msn3800-r0  N/A       ONIE         /etc/mlnx/onie-updater-x86_64-mlnx_x86-r0  2020.02-5.2.0021-9600 / 2020.02-5.2.0021-9600      up-to-date
                                  SSD          /etc/mlnx/mlnx_ssd_fw_package.pkg          0202-000 / 0202-000                                up-to-date
                                  BIOS         /etc/mlnx/0ACLH004.rom                     0ACLH004_02.02.007_9600 / 0ACLH004_02.02.007_9600  up-to-date
                                  CPLD1        /etc/mlnx/sn3800_cpld.mpfa                 CPLD000120_REV0700 / CPLD000120_REV0700            up-to-date
                                  CPLD2        /etc/mlnx/sn3800_cpld.mpfa                 CPLD000165_REV0400 / CPLD000165_REV0400            up-to-date
                                  CPLD3        /etc/mlnx/sn3800_cpld.mpfa                 CPLD000166_REV0300 / CPLD000166_REV0300            up-to-date
                                  CPLD4        /etc/mlnx/sn3800_cpld.mpfa                 CPLD000167_REV0100 / CPLD000167_REV0100            up-to-date