BULAWAYO, Zimbabwe — Pakistan rode Kamran Ghulam’s maiden one-day international century to beat Zimbabwe by 99 runs and clinch the series 2-1 on Thursday. A second successive ODI series win for Rizwan followed an historic 2-1 result against Australia, Pakistan’s first in Australia since 2002. In the absence of rested fast bowlers Shaheen Shah Afridi and Naseem Shah, Pakistan’s second-string …