Added P4MASTERPORT checks to verify_sdp.sh
These should be checked:
p4 -p $P4MASTERPORT trust -f -y (only if SSL is enabled).
p4 -p $P4MASTERPORT login -s
And if that login files:
p4 -p $P4MASTERPORT login -a < /p4/common/config/.p4passwd.p4_1.admin
p4 -p $P4MASTERPORT login -s