Stratimikos: fix CMake for Amesos2 disabled

[ibaned]

@trilinos/stratimikos

Description

Try to fix a use case brought up by @hkthorn
in respose to #1090

Motivation and Context

@hkthorn has a build where configure fails in this file.

How Has This Been Tested?

Not tested by me yet, I intend to use the checkin script.
@hkthorn could test her case if possible.

Checklist

• My code follows the code style of the affected package(s).
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the code contribution guidelines for this project.
• I have added tests to cover my changes.
• All new and existing tests passed.
• No new compiler warnings were introduced.
• These changes break backwards compatibility.

[bartlettroscoe]

@ibaned, the branch stratimikos-amesos2 has already been rebased and merged. Therefore, another branch should be created for this.

[ibaned]

@bartlettroscoe what is the downside of doing two pull requests with the same branch name?

[bartlettroscoe]

@bartlettroscoe what is the downside of doing two pull requests with the same branch name?

To be 100% clear, that branch should be created off of 'develop' and then I guess there is no harm. But my opinion is that a branch called something like stratimikos-amesos2-fix1 might be better.

[ibaned]

this branch was recreated off of develop, so its only the same name but not the same history as the last one. unfortunately I don't see a way to change the source branch without creating a whole new PR, but I'll try to give them different names in the future.