Don't stop if database.sql.gz already exists
Don't stop if database.sql.gz already exists

The existing behavior of the backups is to overwrite whatever data
was still there in the scratch directories. This broke when we added
a 'gzip' step because 'gzip database.sql' will fail if 'database.sql.gz'
already exists. Doing 'rm -f database.sql.gz' before the 'gzip'
avoids this failure.

ksoichiro/gitlabhq,michaKFromParis/gitlabhq,screenpages/gitlabhq,michaKFromParis/gitlabhq,michaKFromParis/gitlabhq,michaKFromParis/gitlabhqold,ksoichiro/gitlabhq,ksoichiro/gitlabhq,michaKFromParis/gitlabhqold,screenpages/gitlabhq,michaKFromParis/gitlabhqold,screenpages/gitlabhq,screenpages/gitlabhq,michaKFromParis/gitlabhqold,ksoichiro/gitlabhq,michaKFromParis/gitlabhq