Low: IPaddr2: fix error msg from manual clone/incarnation # era

Relevant commits:
- resource-agents: 8fd391725b83b5874daef826b4e4f76892207192
- pacemaker:       7df298fc25de2e89afcae330f6e2a4e6a351489a

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Low: IPaddr2: further tweak error msg wrt. clone-max

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Low: IPaddr2: fix inconsistency in the error msg

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Merge pull request #426 from jnpkrn/IPaddr2-error-msgs

IPaddr2 error msgs fix up