Adding a wait for the master before deploying the follower

[rpothier]

Desired Outcome

Seeing the following error with the latest CI runs.

[2023-01-27T15:00:55.464Z] psql: could not connect to server: No such file or directory
[2023-01-27T15:00:55.464Z]     Is the server running locally and accepting
[2023-01-27T15:00:55.464Z]     connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

Implemented Changes

Added a wait for the master before provisioning the follower

Connected Issue/Story

Definition of Done

At least 1 todo must be completed in the sections below for the PR to be
merged.

Changelog

• The CHANGELOG has been updated, or
• This PR does not include user-facing changes and doesn't require a
  CHANGELOG update

Test coverage

• This PR includes new unit and integration tests to go with the code
  changes, or
• The changes in this PR do not require tests

Documentation

• Docs (e.g. READMEs) were updated in this PR
• A follow-up issue to update official docs has been filed here: [insert issue ID]
• This PR does not require updating any documentation

Behavior

• This PR changes product behavior and has been reviewed by a PO, or
• These changes are part of a larger initiative that will be reviewed later, or
• No behavior was changed with this PR

Security

• Security architect has reviewed the changes in this PR,
• These changes are part of a larger initiative with a separate security review, or
• There are no security aspects to these changes

[micahlee]

LGTM, thanks @rpothier!