Add some proxy testdata

testdata/EAGLE_6-mpiuse_report-step104-2ranks-proxies.dat

+318842358 72014620414 0 104 0 1 send 23 unknown 29 1 0 4 4
+325579562 72021357618 0 104 0 1 send 23 unknown 35 1 6 4335296 4335300
+325684336 72021462392 0 104 0 1 recv 24 unknown 29 1 8 4 4335304
+325789434 72021567490 105098 104 0 1 recv 24 unknown 29 0 8 -4 4335300
+325814752 72021592808 0 104 0 1 recv 24 unknown 35 1 14 4004224 8339524
+325823570 72021601626 6981212 104 0 1 send 23 unknown 29 0 0 -4 8339520
+327944432 72023722488 2129680 104 0 1 recv 24 unknown 35 0 14 -4004224 4335296
+340501018 72036279074 14921456 104 0 1 send 23 unknown 35 0 6 -4335296 0
+318596318 72253846468 0 104 1 0 send 23 unknown 29 1 8 4 4
+322963608 72258213758 0 104 1 0 send 23 unknown 35 1 14 4004224 4004228
+323017682 72258267832 0 104 1 0 recv 24 unknown 29 1 0 4 4004232
+323064374 72258314524 46692 104 1 0 recv 24 unknown 29 0 0 -4 4004228
+323085482 72258335632 0 104 1 0 recv 24 unknown 35 1 6 4335296 8339524
+323094388 72258344538 4498070 104 1 0 send 23 unknown 29 0 8 -4 8339520
+325755622 72261005772 2670140 104 1 0 recv 24 unknown 35 0 6 -4335296 4004224
+339352502 72274602652 16388894 104 1 0 send 23 unknown 35 0 14 -4004224 0