[submodule update] sonic-restapi

a1830c1761087bdc1f7433ebbb8d0bdc419da0d3 (HEAD -> 201911, origin/master, origin/HEAD, origin/201911) Fix OpenAPI spec to be readable by autorest (#101)
94805a39ac0712219f7dc08faa2cfdbf371dd177 Identify and report Vnet GUID for conflicting VNI (#99)
4832dfd677de72edc44d4eb8c1b60cfad79a3355 Static route expiry if not specified as persistent  (#98)
5cc4358fb67b9e2a0da9a6691064e41f97ebebc2 (master) Add support for overlay ECMP (#96)
6822a46197daef060b4d00dba5153b04b163c43f [CI] Set diff cover threshold to 50% (#97)
dcc826a1503060b9a07e4510b4f48331c49e87dd Add PR diff coverage (#95)
e842c5ff317c67919dcbcab3358143cb9a16c9dd Generate code coverage for Unit Tests (#94)
f9bbed3cb86a3bab9a07745096835dbdbe5a4db6 Convert Unit Tests from unittest framework to pytest framework (#93)

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>