Set requests and limits for appserverwarmer

[hrosenbe]

Changes in this pull request:

• In order to make the appServer pod fall into the Kubernetes guaranteed QoS class, we updated the setting of requests and limits on the warmer container in that pod. This slightly increases the CPu and Memory requirements of the configurations.
• Change limitsExpansionPct to not apply to the app server (tomcat) pod so that it is not possible to increase the capability of the specific configs.
• Updated the documentation

[vmwclabot]

@hrosenbe, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit fdda61ada1b76854b8a1ec0d3713994ba5c14c3b must be signed by hrosenbe@vmware.com

[vmwclabot]

@hrosenbe, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit fdda61ada1b76854b8a1ec0d3713994ba5c14c3b must be signed by hrosenbe@vmware.com