Updating mirror URIs

Change-Id: I21ae585c1ce50300834ed29517bb7f1ba72ef4e3
Provide draft

Change-Id: Ib7650a74067bf4f3485785dae2dd7b52c8d9be8a
Complete Re-design. Create centos_update mirror

Change-Id: I3572e88cf92342201732341b138d846328ebb957
Fix some typos

Change-Id: I75435c86f72955f8d2d452fc18df851176f0a29c
Improve version support

Change-Id: I86751692d1c97b3702c041a69451833fdaf20e46
Fix var name

Change-Id: I83d1260a7ac7b5a574ce4b9a38548f2ac2f2e06a
Fix variables names in sed

Change-Id: I27555ddd7c28519717750c0cbc428962f5d4965c
Refactoring update process

Change-Id: I7a6fc58ccffc0c7752779a759c76bdade84ceb9a
Improve removal prcedure for centos_update folder

Change-Id: I2be78dbde70ea33028aee8e159639123ddb632ac
Add check for update packages

Change-Id: I0c0d9fe89a25c70cd124078d90afd9f65fc6d153