easier to build - set the username and pw in the build

[julie-sullivan]

so in my humanmine.properties for example, I have this:

db.common-tgt-items.datasource.serverName=localhost
db.common-tgt-items.datasource.databaseName=items-humanmine
db.common-tgt-items.datasource.user=ank
db.common-tgt-items.datasource.password=ank

I have to update the username and password to be postgres

Instead we could have the script delete any lines that start with:

# delete these lines from humanmine.properties
db.common-tgt-items.datasource.user
db.common-tgt-items.datasource.password

And replace with these lines

# add these lines to humanmine.properties
db.common-tgt-items.datasource.user=postgres
db.common-tgt-items.datasource.password=postgres

Same for tomcat.

Just less steps for the user, and less bugs!