Print out unrecovered tags in TLogPoppedTag event

[halfprice]

For easier unrecovered tag identification.

Example output from simulation:

<Event Severity="10" Time="74.919696" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="6" Tag="-7:0" DurableKCVer="348007463" RecoveredAt="247536981" UnpoppedTags="-7:1,-7:2,-1:2,0:0,0:1,0:2" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="74.919696" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="5" Tag="-7:1" DurableKCVer="348007463" RecoveredAt="247536981" UnpoppedTags="-7:2,-1:2,0:0,0:1,0:2" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="74.920235" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="4" Tag="-7:2" DurableKCVer="348007463" RecoveredAt="247536981" UnpoppedTags="-1:2,0:0,0:1,0:2" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="83.810547" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="3" Tag="-1:2" DurableKCVer="355924697" RecoveredAt="247536981" UnpoppedTags="0:0,0:1,0:2" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="83.817134" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="2" Tag="0:1" DurableKCVer="355924697" RecoveredAt="247536981" UnpoppedTags="0:0,0:2" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="83.822607" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="1" Tag="0:2" DurableKCVer="355924697" RecoveredAt="247536981" UnpoppedTags="0:0" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />
<Event Severity="10" Time="83.822857" DateTime="2022-07-26T03:13:37Z" Type="TLogPoppedTag" Machine="2.0.1.0:1" ID="b6c2579169719573" Tags="0" Tag="0:0" DurableKCVer="355924697" RecoveredAt="247536981" UnpoppedTags="[no items]" ThreadID="17612545742900120253" LogGroup="default" Roles="CC,CD,RV,SS,TL" />

20220726-012311-zhewu-tlog-recover-tag-9a3b7ad8423eadca compressed=True data_size=34901148 duration=4560691 ended=100000 fail_fast=10 max_runs=100000 pass=100000 priority=100 remaining=0 runtime=1:02:55 sanity=False started=100097 stopped=20220726-022606 submitted=20220726-012311 timeout=5400 username=zhewu-tlog-recover-tag

Code-Reviewer Section

The general guidelines can be found here.

Please check each of the following things and check all boxes before accepting a PR.

• The PR has a description, explaining both the problem and the solution.
• The description mentions which forms of testing were done and the testing seems reasonable.
• Every function/class/actor that was touched is reasonably well documented.

For Release-Branches

If this PR is made against a release-branch, please also check the following:

• This change/bugfix is a cherry-pick from the next younger branch (younger release-branch or main if this is the youngest branch)
• There is a good reason why this PR needs to go into a release branch and this reason is documented (either in the description above or in a linked GitHub issue)

[fdb-windows-ci]

Doxense CI Report for Windows 10

• Commit ID: a2a4844
• Result: ✔️ SUCCEEDED
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-macos on macOS BigSur 11.5.2

• Commit ID: a2a4844
• Duration 0:44:33
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr on Linux CentOS 7

• Commit ID: a2a4844
• Duration 1:01:23
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-cluster-tests on Linux CentOS 7

• Commit ID: a2a4844
• Duration 4:16:20
• Result: ❌ FAILED
• Error: Build has timed out.
• Build Logs (available for 30 days)