Squashed 'external/devlib/' changes from ad350c926..9e6cfde83

9e6cfde83 AndroidTarget: Fix additional paramter to `adb_root`
4fe0b2cb6 rendering/SurfaceFlingerFrameCollector: Update parser to ignore text
b9654c694 target/install: Add timeout parameters to additional `install` methods
ed135febd LocalConnection: Implement `connected_as_root` parameter
5d4315c5d AndroidTarget: Add guards / workarounds for adb specific functionality
9982f810e AndroidTarget: Utilise the adb root functionality of the connection
5601fdb10 target.py: Track `connected_as_root` in the connection
4e36bad2a target.py: Un-memoize the `is_rooted` property
72e4443b7 AdbConnection: Enable `adb_as_root` as a connection parameter
9ddf76365 AdbConnection: Add adb rooting to the connection to allow tracking
18830b74d SshConnection: Implement tracking of connected_as_root status
66de30799 doc/connection: Update connection documentation
156915f26 cpuidle: fix exist() --> exists() typo.
74edfcbe4 target: Fix quoting of PATH components
aa62a52ee target: Make sure subprocesses of Target.execute() inherit PATH
9c86174ff target: Add Target.execute(force_locale='C') parameter
ea19235ae trace: dmesg: Add KernelLogEntry.from_dmesg_output() classmethod
e1fb6cf91 module/cpufreq: Make use_governor() affect only online CPUs
d9d187471 trace: dmesg: Ignore empty lines
c944d3459 utils/android: Fix echoing of commands.
964fde2fe utils/android: Echo the exit code of the actual command
988de69b6 target: Add Target.revertable_write_value()
ded30eef0 misc: Add batch_contextmanager
71bd8b10e trace/systrace: make start() return when tracing has started
986261bc7 utils/android: Move private method to end of class
dc5f4c6b4 android/adb: Enable fall back for `su` command
88f8c9e9a module/cpuidle: Add fallback for reading governor
0c434e8a1 setup.py: Remove Python2 as a supported version
584836984 Version Bump
002ade33a Version Bump
2e8d42db7 setup.py Update classifiers
6b414cc29 utils.adb_shell: Move from 'echo CMD | su' to '-c'
0d798f1c4 utils.adb_shell: Improve stability (Py3)
1325e59b1 target/KernelConfig: Implement the `__bool__` method
f141899da target/KernelConfig: Ensure `get_config_name` is static
984556bc8 module/sched: Make SchedModule probing more accurate
03a469fc3 module/sched: Expose the remote CPU capacity sysfs path
2d8647468 module/sched: Expose a classmethod variant of SchedModule.has_debug
ada318f27 module/sched: Fix None check
b8f7b2479 module/sched: Fix incorrect SchedProcFSData usage
a9b9938b0 module/sched: Return the correct maximum capacity
f619f1dd0 setup.py: Set maximum package version for python2.7 support

git-subtree-dir: external/devlib
git-subtree-split: 9e6cfde8321ece662292d6b79f6c218c36fae6c9