MySQL 5.7 bug for null value in timestamp column

[hashkanna]

Checklist:

• I've included the version.
• I've included reproduction steps.
• I've included the workflow YAML.
• I've included the logs.

What happened:
Installation of Argo fails while applying the MySQL YAML manifest for MySQL 5.7 version with error message.
Error 1067: Invalid default value for 'finishedat'

INFO[0000] applying database change                      
change="alter table argo_archived_workflows modify column finishedat timestamp not null"
changeSchemaVersion=16
2020/05/02 18:28:50 	
Session ID: 00001	
Query: alter table argo_archived_workflows modify column finishedat timestamp not null	
Error:  Error 1067: Invalid default value for 'finishedat'	
Time taken: 0.00199s	
Context: context.Background

What you expected to happen:
Expected the installation to succeed.

How to reproduce it (as minimally and precisely as possible):

1. Replace the version of mysql from 8 to 5.7 by changing the image in manifests/quick-start/mysql/mysql-deployment.yaml
2. make start 

Anything else we need to know?:

Environment:

• Argo version:

$ argo version
argo: v2.7.6+70facdb.dirty  
BuildDate: 2020-04-28T17:09:06Z  
GitCommit: 70facdb67207dbe115a9029e365f8e974e6156bc  
GitTreeState: dirty  
GitTag: v2.7.6  
GoVersion: go1.13.4  
Compiler: gc  
Platform: darwin/amd64

• Kubernetes version :

$ kubectl version -o yaml
clientVersion:  
  buildDate: "2020-01-18T23:30:10Z"  
  compiler: gc  
  gitCommit: 59603c6e503c87169aea6106f57b9f242f64df89
  gitTreeState: clean  gitVersion: v1.17.2
  goVersion: go1.13.5
  major: "1"
  minor: "17"
  platform: darwin/amd64
serverVersion:
  buildDate: "2020-01-18T23:22:30Z"
  compiler: gc
  gitCommit: 59603c6e503c87169aea6106f57b9f242f64df89
  gitTreeState: clean
  gitVersion: v1.17.2
  goVersion: go1.13.5
  major: "1"
  minor: "17"
  platform: linux/amd64

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Message from the maintainers:

If you are impacted by this bug please add a 👍 reaction to this issue! We often sort issues this way to know what to prioritize.

[hashkanna]

Fixed in #2933