Actions/Workflow: upload artifact

Support a complete ALTER TABLE statement in --alter

handle driver timeout error

 Updates from upstream 2020 10

Initial commit: towards setting up a test suite

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

…original table, applying AUTO_INCREMENT value onto ghost table if applicable and user has not specified AUTO_INCREMENT in alter statement

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

Copying AUTO_INCREMENT value to ghost table

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

Generated column as part of UNIQUE (or PRIMARY) KEY

Cut-over should wait for heartbeat lag to be low enough to succeed

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>