Update cisco-8000 ref to release: 202012-v0.97 (sonic-net#11038)

Important fixes since 202012-v0.97:
V0.102:
Hwsku changes to Cisco-8102-C64
Fix for watermark clear issue
V0.101:
Fix for dhcp_relay test issue
V0.100:
Fix for container_autorestart test issue
V0.99:
Fix for everflow test issue
Fix for pfcwd test issue
Fix for copp test issue
V0.98:
Fix for qos_sai test issue
RDMA enhancements dev complete and content included in this drop (flow based VoQ, ECN, Alpha)

Signed-off-by: Kevin Wang <shengkaiwang@microsoft.com>

Fix calculation of $(1)_DEP_PKGS_SHA in Makefile.cache (sonic-net#10764)

In Makefile.cache, for $(1)_DEP_PKGS_SHA, the intention is to include
the DEP_MOD_SHA and MOD_HASH of each of the current package's
dependencies. However, there's a level of dereferencing missing; instead
of grabbing the value of $(dfile)_DEP_MOD_SHA, it is literally using the
variable name $(dfile)_DEP_MOD_SHA. This means that the value of this
variable will not change when some dependency changes.

The impact of this is in transitive dependencies. For a specific
example, if there is some change in sairedis, then sairedis will be
rebuilt (because there's a change within that component), and swss will
be rebuilt (because it's a direct dependency), but
docker-swss-layer-buster will not get rebuilt, because only the direct
dependencies are effectively being checked, and those aren't changing.

Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>

[BFN] Update SAI and platform packages to 20200710 (sonic-net#4942)

Barefoot, updated SAI and platform packages to 20200710

Signed-off-by: Volodymyr Boyko <volodymyrx.boiko@intel.com>

[BFN] Update SAI and platform packages to 20200710 (sonic-net#4944)

Signed-off-by: Volodymyr Boyko <volodymyrx.boiko@intel.com>

[caclmgrd] Add a rule to allow all connections from localhost (sonic-…

…net#1858)

[sonic-utilities] include reboot scripts improvements (sonic-net#1554)

[swss]: Move swss/common/sairedis submodule to 201709 tag

[image]: Update login message (sonic-net#706)