Unsupported region check in OpenHack/byos/devops/deploy/deploy-gh.sh

[riwasa]

If you use 'eastus2' as the value for AZURE_LOCATION, the unsupported Azure region check will fail, as the 'if' condition will incorrectly match the AZURE_LOCATION value to the value of 'eastus2euap' in the unsupported_azure_regions array. The same is true if you try using 'centralus'; it ends up mapping to 'centraluseuap'.

The script should allow for both 'eastus2' and 'centralus' as valid regions.