Update author per SFI Wave 4

Author: ShawnKupfer

learn-pr/data-ai-cert/data-warehouse-security/1-introduction.yml

@@ -6,7 +6,7 @@ metadata:
   description: Introduction
   ms.date: 01/31/2019
   author: wwlpublish
-  ms.author: chtestao
+  ms.author: anrudduc
   ms.topic: unit
 durationInMinutes: 5
 content: |

learn-pr/data-ai-cert/data-warehouse-security/2-azure-dw-security-control.yml

@@ -6,7 +6,7 @@ metadata:
   description: Use Azure Synapse Analytics security controls
   ms.date: 01/31/2019
   author: wwlpublish
-  ms.author: chtestao
+  ms.author: anrudduc
   ms.topic: unit
 durationInMinutes: 20
 content: |

learn-pr/data-ai-cert/data-warehouse-security/3-security-monitoring-and-auditing.yml

@@ -6,7 +6,7 @@ metadata:
   description: Use security monitoring and auditing
   ms.date: 01/31/2019
   author: wwlpublish
-  ms.author: chtestao
+  ms.author: anrudduc
   ms.topic: unit
 durationInMinutes: 5
 content: |

learn-pr/data-ai-cert/data-warehouse-security/4-summary.yml

@@ -6,7 +6,7 @@ metadata:
   description: Summary
   ms.date: 01/31/2019
   author: wwlpublish
-  ms.author: chtestao
+  ms.author: anrudduc
   ms.topic: unit
 durationInMinutes: 5
 content: |

learn-pr/data-ai-cert/data-warehouse-security/index.yml

@@ -5,7 +5,7 @@ metadata:
   description: Learn about the security controls that Azure Synapse Analytics provides to help secure your data warehouse infrastructure and the data that's stored in it
   ms.date: 01/31/2019
   author: wwlpublish
-  ms.author: chtestao
+  ms.author: anrudduc
   ms.topic: module
 title: Data warehouse security
 summary: Learn about the security controls that Azure Synapse Analytics provides to help secure your data warehouse infrastructure and the data that's stored in it.